Changes between Initial Version and Version 1 of Ticket #2911


Ignore:
Timestamp:
Mar 3, 2020, 11:01:18 AM (6 years ago)
Author:
Eric Pettersen
Comment:

Legend:

Unmodified
Added
Removed
Modified

  • Ticket #2911

    • Property Component Unassigned → Sessions
    • Property Owner set to Tom Goddard
    • Property Platform → all
    • Property Project → ChimeraX
    • Property Status new → assigned
    • Property Summary ChimeraX bug report submission → Problem restoring clip planes from session

  • Ticket #2911 – Description

    initial v1  
    8989See log for complete Python traceback. 
    9090 
    91 Traceback (most recent call last): 
    92 File
    93 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    94 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    95 if not self.draw_new_frame(): 
    96 File
    97 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    98 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    99 surface.update_clip_caps(view) 
    100 File
    101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    102 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    103 p.update_direction(cpos) 
    104 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    105  
    106 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    107  
    108 File
    109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    110 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    111 p.update_direction(cpos) 
    112  
    113 See log for complete Python traceback. 
    114  
    115 Traceback (most recent call last): 
    116 File
    117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    118 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    119 if not self.draw_new_frame(): 
    120 File
    121 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    122 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    123 surface.update_clip_caps(view) 
    124 File
    125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    126 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    127 p.update_direction(cpos) 
    128 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    129  
    130 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    131  
    132 File
    133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    134 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    135 p.update_direction(cpos) 
    136  
    137 See log for complete Python traceback. 
    138  
    139 Traceback (most recent call last): 
    140 File
    141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    142 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    143 if not self.draw_new_frame(): 
    144 File
    145 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    146 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    147 surface.update_clip_caps(view) 
    148 File
    149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    150 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    151 p.update_direction(cpos) 
    152 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    153  
    154 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    155  
    156 File
    157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    158 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    159 p.update_direction(cpos) 
    160  
    161 See log for complete Python traceback. 
    162  
    163 Traceback (most recent call last): 
    164 File
    165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    166 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    167 if not self.draw_new_frame(): 
    168 File
    169 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    170 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    171 surface.update_clip_caps(view) 
    172 File
    173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    174 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    175 p.update_direction(cpos) 
    176 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    177  
    178 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    179  
    180 File
    181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    182 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    183 p.update_direction(cpos) 
    184  
    185 See log for complete Python traceback. 
    186  
    187 Traceback (most recent call last): 
    188 File
    189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    190 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    191 if not self.draw_new_frame(): 
    192 File
    193 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    194 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    195 surface.update_clip_caps(view) 
    196 File
    197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    198 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    199 p.update_direction(cpos) 
    200 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    201  
    202 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    203  
    204 File
    205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    206 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    207 p.update_direction(cpos) 
    208  
    209 See log for complete Python traceback. 
    210  
    211 Traceback (most recent call last): 
    212 File
    213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    214 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    215 if not self.draw_new_frame(): 
    216 File
    217 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    218 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    219 surface.update_clip_caps(view) 
    220 File
    221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    222 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    223 p.update_direction(cpos) 
    224 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    225  
    226 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    227  
    228 File
    229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    230 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    231 p.update_direction(cpos) 
    232  
    233 See log for complete Python traceback. 
    234  
    235 Traceback (most recent call last): 
    236 File
    237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    238 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    239 if not self.draw_new_frame(): 
    240 File
    241 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    242 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    243 surface.update_clip_caps(view) 
    244 File
    245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    246 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    247 p.update_direction(cpos) 
    248 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    249  
    250 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    251  
    252 File
    253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    254 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    255 p.update_direction(cpos) 
    256  
    257 See log for complete Python traceback. 
    258  
    259 Traceback (most recent call last): 
    260 File
    261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    262 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    263 if not self.draw_new_frame(): 
    264 File
    265 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    266 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    267 surface.update_clip_caps(view) 
    268 File
    269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    270 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    271 p.update_direction(cpos) 
    272 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    273  
    274 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    275  
    276 File
    277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    278 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    279 p.update_direction(cpos) 
    280  
    281 See log for complete Python traceback. 
    282  
    283 Traceback (most recent call last): 
    284 File
    285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    286 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    287 if not self.draw_new_frame(): 
    288 File
    289 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    290 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    291 surface.update_clip_caps(view) 
    292 File
    293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    294 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    295 p.update_direction(cpos) 
    296 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    297  
    298 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    299  
    300 File
    301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    302 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    303 p.update_direction(cpos) 
    304  
    305 See log for complete Python traceback. 
    306  
    307 Traceback (most recent call last): 
    308 File
    309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    310 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    311 if not self.draw_new_frame(): 
    312 File
    313 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    314 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    315 surface.update_clip_caps(view) 
    316 File
    317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    318 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    319 p.update_direction(cpos) 
    320 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    321  
    322 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    323  
    324 File
    325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    326 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    327 p.update_direction(cpos) 
    328  
    329 See log for complete Python traceback. 
    330  
    331 Traceback (most recent call last): 
    332 File
    333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    334 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    335 if not self.draw_new_frame(): 
    336 File
    337 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    338 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    339 surface.update_clip_caps(view) 
    340 File
    341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    342 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    343 p.update_direction(cpos) 
    344 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    345  
    346 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    347  
    348 File
    349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    350 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    351 p.update_direction(cpos) 
    352  
    353 See log for complete Python traceback. 
    354  
    355 Traceback (most recent call last): 
    356 File
    357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    358 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    359 if not self.draw_new_frame(): 
    360 File
    361 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    362 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    363 surface.update_clip_caps(view) 
    364 File
    365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    366 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    367 p.update_direction(cpos) 
    368 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    369  
    370 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    371  
    372 File
    373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    374 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    375 p.update_direction(cpos) 
    376  
    377 See log for complete Python traceback. 
    378  
    379 Traceback (most recent call last): 
    380 File
    381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    382 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    383 if not self.draw_new_frame(): 
    384 File
    385 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    386 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    387 surface.update_clip_caps(view) 
    388 File
    389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    390 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    391 p.update_direction(cpos) 
    392 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    393  
    394 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    395  
    396 File
    397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    398 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    399 p.update_direction(cpos) 
    400  
    401 See log for complete Python traceback. 
    402  
    403 Traceback (most recent call last): 
    404 File
    405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    406 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    407 if not self.draw_new_frame(): 
    408 File
    409 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    410 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    411 surface.update_clip_caps(view) 
    412 File
    413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    414 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    415 p.update_direction(cpos) 
    416 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    417  
    418 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    419  
    420 File
    421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    422 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    423 p.update_direction(cpos) 
    424  
    425 See log for complete Python traceback. 
    426  
    427 Traceback (most recent call last): 
    428 File
    429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    430 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    431 if not self.draw_new_frame(): 
    432 File
    433 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    434 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    435 surface.update_clip_caps(view) 
    436 File
    437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    438 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    439 p.update_direction(cpos) 
    440 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    441  
    442 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    443  
    444 File
    445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    446 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    447 p.update_direction(cpos) 
    448  
    449 See log for complete Python traceback. 
    450  
    451 Traceback (most recent call last): 
    452 File
    453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    454 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    455 if not self.draw_new_frame(): 
    456 File
    457 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    458 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    459 surface.update_clip_caps(view) 
    460 File
    461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    462 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    463 p.update_direction(cpos) 
    464 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    465  
    466 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    467  
    468 File
    469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    470 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    471 p.update_direction(cpos) 
    472  
    473 See log for complete Python traceback. 
    474  
    475 Traceback (most recent call last): 
    476 File
    477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    478 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    479 if not self.draw_new_frame(): 
    480 File
    481 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    482 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    483 surface.update_clip_caps(view) 
    484 File
    485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    486 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    487 p.update_direction(cpos) 
    488 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    489  
    490 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    491  
    492 File
    493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    494 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    495 p.update_direction(cpos) 
    496  
    497 See log for complete Python traceback. 
    498  
    499 Traceback (most recent call last): 
    500 File
    501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    502 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    503 if not self.draw_new_frame(): 
    504 File
    505 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    506 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    507 surface.update_clip_caps(view) 
    508 File
    509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    510 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    511 p.update_direction(cpos) 
    512 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    513  
    514 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    515  
    516 File
    517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    518 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    519 p.update_direction(cpos) 
    520  
    521 See log for complete Python traceback. 
    522  
    523 Traceback (most recent call last): 
    524 File
    525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    526 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    527 if not self.draw_new_frame(): 
    528 File
    529 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    530 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    531 surface.update_clip_caps(view) 
    532 File
    533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    534 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    535 p.update_direction(cpos) 
    536 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    537  
    538 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    539  
    540 File
    541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    542 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    543 p.update_direction(cpos) 
    544  
    545 See log for complete Python traceback. 
    546  
    547 Traceback (most recent call last): 
    548 File
    549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    550 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    551 if not self.draw_new_frame(): 
    552 File
    553 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    554 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    555 surface.update_clip_caps(view) 
    556 File
    557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    558 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    559 p.update_direction(cpos) 
    560 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    561  
    562 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    563  
    564 File
    565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    566 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    567 p.update_direction(cpos) 
    568  
    569 See log for complete Python traceback. 
    570  
    571 Traceback (most recent call last): 
    572 File
    573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    574 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    575 if not self.draw_new_frame(): 
    576 File
    577 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    578 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    579 surface.update_clip_caps(view) 
    580 File
    581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    582 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    583 p.update_direction(cpos) 
    584 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    585  
    586 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    587  
    588 File
    589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    590 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    591 p.update_direction(cpos) 
    592  
    593 See log for complete Python traceback. 
    594  
    595 Traceback (most recent call last): 
    596 File
    597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    598 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    599 if not self.draw_new_frame(): 
    600 File
    601 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    602 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    603 surface.update_clip_caps(view) 
    604 File
    605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    606 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    607 p.update_direction(cpos) 
    608 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    609  
    610 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    611  
    612 File
    613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    614 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    615 p.update_direction(cpos) 
    616  
    617 See log for complete Python traceback. 
    618  
    619 Traceback (most recent call last): 
    620 File
    621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    622 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    623 if not self.draw_new_frame(): 
    624 File
    625 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    626 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    627 surface.update_clip_caps(view) 
    628 File
    629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    630 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    631 p.update_direction(cpos) 
    632 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    633  
    634 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    635  
    636 File
    637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    638 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    639 p.update_direction(cpos) 
    640  
    641 See log for complete Python traceback. 
    642  
    643 Traceback (most recent call last): 
    644 File
    645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    646 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    647 if not self.draw_new_frame(): 
    648 File
    649 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    650 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    651 surface.update_clip_caps(view) 
    652 File
    653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    654 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    655 p.update_direction(cpos) 
    656 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    657  
    658 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    659  
    660 File
    661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    662 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    663 p.update_direction(cpos) 
    664  
    665 See log for complete Python traceback. 
    666  
    667 Traceback (most recent call last): 
    668 File
    669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    670 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    671 if not self.draw_new_frame(): 
    672 File
    673 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    674 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    675 surface.update_clip_caps(view) 
    676 File
    677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    678 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    679 p.update_direction(cpos) 
    680 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    681  
    682 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    683  
    684 File
    685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    686 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    687 p.update_direction(cpos) 
    688  
    689 See log for complete Python traceback. 
    690  
    691 Traceback (most recent call last): 
    692 File
    693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    694 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    695 if not self.draw_new_frame(): 
    696 File
    697 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    698 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    699 surface.update_clip_caps(view) 
    700 File
    701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    702 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    703 p.update_direction(cpos) 
    704 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    705  
    706 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    707  
    708 File
    709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    710 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    711 p.update_direction(cpos) 
    712  
    713 See log for complete Python traceback. 
    714  
    715 Traceback (most recent call last): 
    716 File
    717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    718 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    719 if not self.draw_new_frame(): 
    720 File
    721 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    722 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    723 surface.update_clip_caps(view) 
    724 File
    725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    726 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    727 p.update_direction(cpos) 
    728 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    729  
    730 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    731  
    732 File
    733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    734 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    735 p.update_direction(cpos) 
    736  
    737 See log for complete Python traceback. 
    738  
    739 Traceback (most recent call last): 
    740 File
    741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    742 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    743 if not self.draw_new_frame(): 
    744 File
    745 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    746 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    747 surface.update_clip_caps(view) 
    748 File
    749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    750 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    751 p.update_direction(cpos) 
    752 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    753  
    754 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    755  
    756 File
    757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    758 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    759 p.update_direction(cpos) 
    760  
    761 See log for complete Python traceback. 
    762  
    763 Traceback (most recent call last): 
    764 File
    765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    766 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    767 if not self.draw_new_frame(): 
    768 File
    769 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    770 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    771 surface.update_clip_caps(view) 
    772 File
    773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    774 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    775 p.update_direction(cpos) 
    776 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    777  
    778 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    779  
    780 File
    781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    782 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    783 p.update_direction(cpos) 
    784  
    785 See log for complete Python traceback. 
    786  
    787 Traceback (most recent call last): 
    788 File
    789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    790 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    791 if not self.draw_new_frame(): 
    792 File
    793 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    794 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    795 surface.update_clip_caps(view) 
    796 File
    797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    798 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    799 p.update_direction(cpos) 
    800 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    801  
    802 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    803  
    804 File
    805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    806 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    807 p.update_direction(cpos) 
    808  
    809 See log for complete Python traceback. 
    810  
    811 Traceback (most recent call last): 
    812 File
    813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    814 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    815 if not self.draw_new_frame(): 
    816 File
    817 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    818 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    819 surface.update_clip_caps(view) 
    820 File
    821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    822 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    823 p.update_direction(cpos) 
    824 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    825  
    826 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    827  
    828 File
    829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    830 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    831 p.update_direction(cpos) 
    832  
    833 See log for complete Python traceback. 
    834  
    835 Traceback (most recent call last): 
    836 File
    837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    838 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    839 if not self.draw_new_frame(): 
    840 File
    841 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    842 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    843 surface.update_clip_caps(view) 
    844 File
    845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    846 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    847 p.update_direction(cpos) 
    848 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    849  
    850 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    851  
    852 File
    853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    854 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    855 p.update_direction(cpos) 
    856  
    857 See log for complete Python traceback. 
    858  
    859 Traceback (most recent call last): 
    860 File
    861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    862 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    863 if not self.draw_new_frame(): 
    864 File
    865 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    866 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    867 surface.update_clip_caps(view) 
    868 File
    869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    870 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    871 p.update_direction(cpos) 
    872 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    873  
    874 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    875  
    876 File
    877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    878 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    879 p.update_direction(cpos) 
    880  
    881 See log for complete Python traceback. 
    882  
    883 Traceback (most recent call last): 
    884 File
    885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    886 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    887 if not self.draw_new_frame(): 
    888 File
    889 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    890 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    891 surface.update_clip_caps(view) 
    892 File
    893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    894 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    895 p.update_direction(cpos) 
    896 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    897  
    898 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    899  
    900 File
    901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    902 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    903 p.update_direction(cpos) 
    904  
    905 See log for complete Python traceback. 
    906  
    907 Traceback (most recent call last): 
    908 File
    909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    910 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    911 if not self.draw_new_frame(): 
    912 File
    913 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    914 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    915 surface.update_clip_caps(view) 
    916 File
    917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    918 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    919 p.update_direction(cpos) 
    920 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    921  
    922 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    923  
    924 File
    925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    926 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    927 p.update_direction(cpos) 
    928  
    929 See log for complete Python traceback. 
    930  
    931 Traceback (most recent call last): 
    932 File
    933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    934 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    935 if not self.draw_new_frame(): 
    936 File
    937 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    938 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    939 surface.update_clip_caps(view) 
    940 File
    941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    942 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    943 p.update_direction(cpos) 
    944 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    945  
    946 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    947  
    948 File
    949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    950 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    951 p.update_direction(cpos) 
    952  
    953 See log for complete Python traceback. 
    954  
    955 Traceback (most recent call last): 
    956 File
    957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    958 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    959 if not self.draw_new_frame(): 
    960 File
    961 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    962 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    963 surface.update_clip_caps(view) 
    964 File
    965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    966 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    967 p.update_direction(cpos) 
    968 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    969  
    970 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    971  
    972 File
    973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    974 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    975 p.update_direction(cpos) 
    976  
    977 See log for complete Python traceback. 
    978  
    979 Traceback (most recent call last): 
    980 File
    981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    982 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    983 if not self.draw_new_frame(): 
    984 File
    985 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    986 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    987 surface.update_clip_caps(view) 
    988 File
    989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    990 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    991 p.update_direction(cpos) 
    992 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    993  
    994 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    995  
    996 File
    997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    998 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    999 p.update_direction(cpos) 
    1000  
    1001 See log for complete Python traceback. 
    1002  
    1003 Traceback (most recent call last): 
    1004 File
    1005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1006 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1007 if not self.draw_new_frame(): 
    1008 File
    1009 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1010 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1011 surface.update_clip_caps(view) 
    1012 File
    1013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1014 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1015 p.update_direction(cpos) 
    1016 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1017  
    1018 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1019  
    1020 File
    1021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1022 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1023 p.update_direction(cpos) 
    1024  
    1025 See log for complete Python traceback. 
    1026  
    1027 Traceback (most recent call last): 
    1028 File
    1029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1030 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1031 if not self.draw_new_frame(): 
    1032 File
    1033 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1034 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1035 surface.update_clip_caps(view) 
    1036 File
    1037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1038 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1039 p.update_direction(cpos) 
    1040 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1041  
    1042 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1043  
    1044 File
    1045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1046 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1047 p.update_direction(cpos) 
    1048  
    1049 See log for complete Python traceback. 
    1050  
    1051 Traceback (most recent call last): 
    1052 File
    1053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1054 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1055 if not self.draw_new_frame(): 
    1056 File
    1057 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1058 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1059 surface.update_clip_caps(view) 
    1060 File
    1061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1062 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1063 p.update_direction(cpos) 
    1064 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1065  
    1066 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1067  
    1068 File
    1069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1070 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1071 p.update_direction(cpos) 
    1072  
    1073 See log for complete Python traceback. 
    1074  
    1075 Traceback (most recent call last): 
    1076 File
    1077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1078 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1079 if not self.draw_new_frame(): 
    1080 File
    1081 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1082 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1083 surface.update_clip_caps(view) 
    1084 File
    1085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1086 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1087 p.update_direction(cpos) 
    1088 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1089  
    1090 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1091  
    1092 File
    1093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1094 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1095 p.update_direction(cpos) 
    1096  
    1097 See log for complete Python traceback. 
    1098  
    1099 Traceback (most recent call last): 
    1100 File
    1101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1102 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1103 if not self.draw_new_frame(): 
    1104 File
    1105 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1106 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1107 surface.update_clip_caps(view) 
    1108 File
    1109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1110 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1111 p.update_direction(cpos) 
    1112 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1113  
    1114 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1115  
    1116 File
    1117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1118 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1119 p.update_direction(cpos) 
    1120  
    1121 See log for complete Python traceback. 
    1122  
    1123 Traceback (most recent call last): 
    1124 File
    1125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1126 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1127 if not self.draw_new_frame(): 
    1128 File
    1129 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1130 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1131 surface.update_clip_caps(view) 
    1132 File
    1133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1134 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1135 p.update_direction(cpos) 
    1136 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1137  
    1138 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1139  
    1140 File
    1141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1142 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1143 p.update_direction(cpos) 
    1144  
    1145 See log for complete Python traceback. 
    1146  
    1147 Traceback (most recent call last): 
    1148 File
    1149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1150 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1151 if not self.draw_new_frame(): 
    1152 File
    1153 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1154 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1155 surface.update_clip_caps(view) 
    1156 File
    1157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1158 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1159 p.update_direction(cpos) 
    1160 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1161  
    1162 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1163  
    1164 File
    1165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1166 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1167 p.update_direction(cpos) 
    1168  
    1169 See log for complete Python traceback. 
    1170  
    1171 Traceback (most recent call last): 
    1172 File
    1173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1174 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1175 if not self.draw_new_frame(): 
    1176 File
    1177 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1178 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1179 surface.update_clip_caps(view) 
    1180 File
    1181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1182 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1183 p.update_direction(cpos) 
    1184 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1185  
    1186 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1187  
    1188 File
    1189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1190 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1191 p.update_direction(cpos) 
    1192  
    1193 See log for complete Python traceback. 
    1194  
    1195 Traceback (most recent call last): 
    1196 File
    1197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1198 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1199 if not self.draw_new_frame(): 
    1200 File
    1201 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1202 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1203 surface.update_clip_caps(view) 
    1204 File
    1205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1206 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1207 p.update_direction(cpos) 
    1208 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1209  
    1210 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1211  
    1212 File
    1213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1214 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1215 p.update_direction(cpos) 
    1216  
    1217 See log for complete Python traceback. 
    1218  
    1219 Traceback (most recent call last): 
    1220 File
    1221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1222 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1223 if not self.draw_new_frame(): 
    1224 File
    1225 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1226 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1227 surface.update_clip_caps(view) 
    1228 File
    1229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1230 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1231 p.update_direction(cpos) 
    1232 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1233  
    1234 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1235  
    1236 File
    1237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1238 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1239 p.update_direction(cpos) 
    1240  
    1241 See log for complete Python traceback. 
    1242  
    1243 Traceback (most recent call last): 
    1244 File
    1245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1246 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1247 if not self.draw_new_frame(): 
    1248 File
    1249 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1250 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1251 surface.update_clip_caps(view) 
    1252 File
    1253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1254 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1255 p.update_direction(cpos) 
    1256 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1257  
    1258 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1259  
    1260 File
    1261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1262 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1263 p.update_direction(cpos) 
    1264  
    1265 See log for complete Python traceback. 
    1266  
    1267 Traceback (most recent call last): 
    1268 File
    1269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1270 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1271 if not self.draw_new_frame(): 
    1272 File
    1273 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1274 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1275 surface.update_clip_caps(view) 
    1276 File
    1277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1278 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1279 p.update_direction(cpos) 
    1280 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1281  
    1282 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1283  
    1284 File
    1285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1286 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1287 p.update_direction(cpos) 
    1288  
    1289 See log for complete Python traceback. 
    1290  
    1291 Traceback (most recent call last): 
    1292 File
    1293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1294 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1295 if not self.draw_new_frame(): 
    1296 File
    1297 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1298 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1299 surface.update_clip_caps(view) 
    1300 File
    1301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1302 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1303 p.update_direction(cpos) 
    1304 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1305  
    1306 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1307  
    1308 File
    1309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1310 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1311 p.update_direction(cpos) 
    1312  
    1313 See log for complete Python traceback. 
    1314  
    1315 Traceback (most recent call last): 
    1316 File
    1317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1318 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1319 if not self.draw_new_frame(): 
    1320 File
    1321 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1322 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1323 surface.update_clip_caps(view) 
    1324 File
    1325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1326 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1327 p.update_direction(cpos) 
    1328 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1329  
    1330 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1331  
    1332 File
    1333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1334 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1335 p.update_direction(cpos) 
    1336  
    1337 See log for complete Python traceback. 
    1338  
    1339 Traceback (most recent call last): 
    1340 File
    1341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1342 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1343 if not self.draw_new_frame(): 
    1344 File
    1345 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1346 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1347 surface.update_clip_caps(view) 
    1348 File
    1349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1350 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1351 p.update_direction(cpos) 
    1352 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1353  
    1354 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1355  
    1356 File
    1357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1358 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1359 p.update_direction(cpos) 
    1360  
    1361 See log for complete Python traceback. 
    1362  
    1363 Traceback (most recent call last): 
    1364 File
    1365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1366 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1367 if not self.draw_new_frame(): 
    1368 File
    1369 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1370 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1371 surface.update_clip_caps(view) 
    1372 File
    1373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1374 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1375 p.update_direction(cpos) 
    1376 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1377  
    1378 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1379  
    1380 File
    1381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1382 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1383 p.update_direction(cpos) 
    1384  
    1385 See log for complete Python traceback. 
    1386  
    1387 Traceback (most recent call last): 
    1388 File
    1389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1390 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1391 if not self.draw_new_frame(): 
    1392 File
    1393 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1394 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1395 surface.update_clip_caps(view) 
    1396 File
    1397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1398 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1399 p.update_direction(cpos) 
    1400 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1401  
    1402 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1403  
    1404 File
    1405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1406 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1407 p.update_direction(cpos) 
    1408  
    1409 See log for complete Python traceback. 
    1410  
    1411 Traceback (most recent call last): 
    1412 File
    1413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1414 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1415 if not self.draw_new_frame(): 
    1416 File
    1417 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1418 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1419 surface.update_clip_caps(view) 
    1420 File
    1421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1422 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1423 p.update_direction(cpos) 
    1424 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1425  
    1426 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1427  
    1428 File
    1429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1430 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1431 p.update_direction(cpos) 
    1432  
    1433 See log for complete Python traceback. 
    1434  
    1435 Traceback (most recent call last): 
    1436 File
    1437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1438 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1439 if not self.draw_new_frame(): 
    1440 File
    1441 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1442 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1443 surface.update_clip_caps(view) 
    1444 File
    1445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1446 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1447 p.update_direction(cpos) 
    1448 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1449  
    1450 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1451  
    1452 File
    1453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1454 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1455 p.update_direction(cpos) 
    1456  
    1457 See log for complete Python traceback. 
    1458  
    1459 Traceback (most recent call last): 
    1460 File
    1461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1462 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1463 if not self.draw_new_frame(): 
    1464 File
    1465 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1466 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1467 surface.update_clip_caps(view) 
    1468 File
    1469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1470 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1471 p.update_direction(cpos) 
    1472 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1473  
    1474 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1475  
    1476 File
    1477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1478 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1479 p.update_direction(cpos) 
    1480  
    1481 See log for complete Python traceback. 
    1482  
    1483 Traceback (most recent call last): 
    1484 File
    1485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1486 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1487 if not self.draw_new_frame(): 
    1488 File
    1489 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1490 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1491 surface.update_clip_caps(view) 
    1492 File
    1493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1494 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1495 p.update_direction(cpos) 
    1496 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1497  
    1498 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1499  
    1500 File
    1501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1502 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1503 p.update_direction(cpos) 
    1504  
    1505 See log for complete Python traceback. 
    1506  
    1507 Traceback (most recent call last): 
    1508 File
    1509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1510 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1511 if not self.draw_new_frame(): 
    1512 File
    1513 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1514 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1515 surface.update_clip_caps(view) 
    1516 File
    1517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1518 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1519 p.update_direction(cpos) 
    1520 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1521  
    1522 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1523  
    1524 File
    1525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1526 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1527 p.update_direction(cpos) 
    1528  
    1529 See log for complete Python traceback. 
    1530  
    1531 Traceback (most recent call last): 
    1532 File
    1533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1534 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1535 if not self.draw_new_frame(): 
    1536 File
    1537 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1538 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1539 surface.update_clip_caps(view) 
    1540 File
    1541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1542 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1543 p.update_direction(cpos) 
    1544 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1545  
    1546 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1547  
    1548 File
    1549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1550 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1551 p.update_direction(cpos) 
    1552  
    1553 See log for complete Python traceback. 
    1554  
    1555 Traceback (most recent call last): 
    1556 File
    1557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1558 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1559 if not self.draw_new_frame(): 
    1560 File
    1561 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1562 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1563 surface.update_clip_caps(view) 
    1564 File
    1565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1566 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1567 p.update_direction(cpos) 
    1568 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1569  
    1570 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1571  
    1572 File
    1573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1574 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1575 p.update_direction(cpos) 
    1576  
    1577 See log for complete Python traceback. 
    1578  
    1579 Traceback (most recent call last): 
    1580 File
    1581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1582 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1583 if not self.draw_new_frame(): 
    1584 File
    1585 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1586 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1587 surface.update_clip_caps(view) 
    1588 File
    1589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1590 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1591 p.update_direction(cpos) 
    1592 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1593  
    1594 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1595  
    1596 File
    1597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1598 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1599 p.update_direction(cpos) 
    1600  
    1601 See log for complete Python traceback. 
    1602  
    1603 Traceback (most recent call last): 
    1604 File
    1605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1606 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1607 if not self.draw_new_frame(): 
    1608 File
    1609 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1610 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1611 surface.update_clip_caps(view) 
    1612 File
    1613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1614 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1615 p.update_direction(cpos) 
    1616 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1617  
    1618 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1619  
    1620 File
    1621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1622 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1623 p.update_direction(cpos) 
    1624  
    1625 See log for complete Python traceback. 
    1626  
    1627 Traceback (most recent call last): 
    1628 File
    1629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1630 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1631 if not self.draw_new_frame(): 
    1632 File
    1633 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1634 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1635 surface.update_clip_caps(view) 
    1636 File
    1637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1638 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1639 p.update_direction(cpos) 
    1640 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1641  
    1642 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1643  
    1644 File
    1645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1646 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1647 p.update_direction(cpos) 
    1648  
    1649 See log for complete Python traceback. 
    1650  
    1651 Traceback (most recent call last): 
    1652 File
    1653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1654 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1655 if not self.draw_new_frame(): 
    1656 File
    1657 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1658 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1659 surface.update_clip_caps(view) 
    1660 File
    1661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1662 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1663 p.update_direction(cpos) 
    1664 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1665  
    1666 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1667  
    1668 File
    1669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1670 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1671 p.update_direction(cpos) 
    1672  
    1673 See log for complete Python traceback. 
    1674  
    1675 Traceback (most recent call last): 
    1676 File
    1677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1678 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1679 if not self.draw_new_frame(): 
    1680 File
    1681 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1682 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1683 surface.update_clip_caps(view) 
    1684 File
    1685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1686 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1687 p.update_direction(cpos) 
    1688 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1689  
    1690 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1691  
    1692 File
    1693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1694 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1695 p.update_direction(cpos) 
    1696  
    1697 See log for complete Python traceback. 
    1698  
    1699 Traceback (most recent call last): 
    1700 File
    1701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1702 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1703 if not self.draw_new_frame(): 
    1704 File
    1705 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1706 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1707 surface.update_clip_caps(view) 
    1708 File
    1709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1710 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1711 p.update_direction(cpos) 
    1712 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1713  
    1714 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1715  
    1716 File
    1717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1718 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1719 p.update_direction(cpos) 
    1720  
    1721 See log for complete Python traceback. 
    1722  
    1723 Traceback (most recent call last): 
    1724 File
    1725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1726 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1727 if not self.draw_new_frame(): 
    1728 File
    1729 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1730 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1731 surface.update_clip_caps(view) 
    1732 File
    1733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1734 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1735 p.update_direction(cpos) 
    1736 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1737  
    1738 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1739  
    1740 File
    1741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1742 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1743 p.update_direction(cpos) 
    1744  
    1745 See log for complete Python traceback. 
    1746  
    1747 Traceback (most recent call last): 
    1748 File
    1749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1750 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1751 if not self.draw_new_frame(): 
    1752 File
    1753 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1754 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1755 surface.update_clip_caps(view) 
    1756 File
    1757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1758 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1759 p.update_direction(cpos) 
    1760 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1761  
    1762 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1763  
    1764 File
    1765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1766 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1767 p.update_direction(cpos) 
    1768  
    1769 See log for complete Python traceback. 
    1770  
    1771 Traceback (most recent call last): 
    1772 File
    1773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1774 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1775 if not self.draw_new_frame(): 
    1776 File
    1777 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1778 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1779 surface.update_clip_caps(view) 
    1780 File
    1781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1782 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1783 p.update_direction(cpos) 
    1784 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1785  
    1786 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1787  
    1788 File
    1789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1790 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1791 p.update_direction(cpos) 
    1792  
    1793 See log for complete Python traceback. 
    1794  
    1795 Traceback (most recent call last): 
    1796 File
    1797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1798 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1799 if not self.draw_new_frame(): 
    1800 File
    1801 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1802 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1803 surface.update_clip_caps(view) 
    1804 File
    1805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1806 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1807 p.update_direction(cpos) 
    1808 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1809  
    1810 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1811  
    1812 File
    1813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1814 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1815 p.update_direction(cpos) 
    1816  
    1817 See log for complete Python traceback. 
    1818  
    1819 Traceback (most recent call last): 
    1820 File
    1821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1822 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1823 if not self.draw_new_frame(): 
    1824 File
    1825 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1826 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1827 surface.update_clip_caps(view) 
    1828 File
    1829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1830 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1831 p.update_direction(cpos) 
    1832 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1833  
    1834 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1835  
    1836 File
    1837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1838 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1839 p.update_direction(cpos) 
    1840  
    1841 See log for complete Python traceback. 
    1842  
    1843 Traceback (most recent call last): 
    1844 File
    1845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1846 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1847 if not self.draw_new_frame(): 
    1848 File
    1849 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1850 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1851 surface.update_clip_caps(view) 
    1852 File
    1853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1854 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1855 p.update_direction(cpos) 
    1856 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1857  
    1858 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1859  
    1860 File
    1861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1862 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1863 p.update_direction(cpos) 
    1864  
    1865 See log for complete Python traceback. 
    1866  
    1867 Traceback (most recent call last): 
    1868 File
    1869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1870 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1871 if not self.draw_new_frame(): 
    1872 File
    1873 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1874 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1875 surface.update_clip_caps(view) 
    1876 File
    1877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1878 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1879 p.update_direction(cpos) 
    1880 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1881  
    1882 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1883  
    1884 File
    1885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1886 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1887 p.update_direction(cpos) 
    1888  
    1889 See log for complete Python traceback. 
    1890  
    1891 Traceback (most recent call last): 
    1892 File
    1893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1894 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1895 if not self.draw_new_frame(): 
    1896 File
    1897 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1898 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1899 surface.update_clip_caps(view) 
    1900 File
    1901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1902 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1903 p.update_direction(cpos) 
    1904 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1905  
    1906 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1907  
    1908 File
    1909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1910 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1911 p.update_direction(cpos) 
    1912  
    1913 See log for complete Python traceback. 
    1914  
    1915 Traceback (most recent call last): 
    1916 File
    1917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1918 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1919 if not self.draw_new_frame(): 
    1920 File
    1921 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1922 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1923 surface.update_clip_caps(view) 
    1924 File
    1925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1926 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1927 p.update_direction(cpos) 
    1928 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1929  
    1930 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1931  
    1932 File
    1933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1934 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1935 p.update_direction(cpos) 
    1936  
    1937 See log for complete Python traceback. 
    1938  
    1939 Traceback (most recent call last): 
    1940 File
    1941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1942 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1943 if not self.draw_new_frame(): 
    1944 File
    1945 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1946 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1947 surface.update_clip_caps(view) 
    1948 File
    1949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1950 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1951 p.update_direction(cpos) 
    1952 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1953  
    1954 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1955  
    1956 File
    1957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1958 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1959 p.update_direction(cpos) 
    1960  
    1961 See log for complete Python traceback. 
    1962  
    1963 Traceback (most recent call last): 
    1964 File
    1965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1966 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1967 if not self.draw_new_frame(): 
    1968 File
    1969 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1970 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1971 surface.update_clip_caps(view) 
    1972 File
    1973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1974 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1975 p.update_direction(cpos) 
    1976 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1977  
    1978 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    1979  
    1980 File
    1981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1982 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1983 p.update_direction(cpos) 
    1984  
    1985 See log for complete Python traceback. 
    1986  
    1987 Traceback (most recent call last): 
    1988 File
    1989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1990 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    1991 if not self.draw_new_frame(): 
    1992 File
    1993 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1994 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    1995 surface.update_clip_caps(view) 
    1996 File
    1997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    1998 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    1999 p.update_direction(cpos) 
    2000 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2001  
    2002 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2003  
    2004 File
    2005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2006 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2007 p.update_direction(cpos) 
    2008  
    2009 See log for complete Python traceback. 
    2010  
    2011 Traceback (most recent call last): 
    2012 File
    2013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2014 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2015 if not self.draw_new_frame(): 
    2016 File
    2017 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2018 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2019 surface.update_clip_caps(view) 
    2020 File
    2021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2022 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2023 p.update_direction(cpos) 
    2024 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2025  
    2026 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2027  
    2028 File
    2029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2030 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2031 p.update_direction(cpos) 
    2032  
    2033 See log for complete Python traceback. 
    2034  
    2035 Traceback (most recent call last): 
    2036 File
    2037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2038 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2039 if not self.draw_new_frame(): 
    2040 File
    2041 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2042 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2043 surface.update_clip_caps(view) 
    2044 File
    2045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2046 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2047 p.update_direction(cpos) 
    2048 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2049  
    2050 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2051  
    2052 File
    2053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2054 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2055 p.update_direction(cpos) 
    2056  
    2057 See log for complete Python traceback. 
    2058  
    2059 Traceback (most recent call last): 
    2060 File
    2061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2062 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2063 if not self.draw_new_frame(): 
    2064 File
    2065 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2066 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2067 surface.update_clip_caps(view) 
    2068 File
    2069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2070 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2071 p.update_direction(cpos) 
    2072 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2073  
    2074 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2075  
    2076 File
    2077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2078 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2079 p.update_direction(cpos) 
    2080  
    2081 See log for complete Python traceback. 
    2082  
    2083 Traceback (most recent call last): 
    2084 File
    2085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2086 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2087 if not self.draw_new_frame(): 
    2088 File
    2089 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2090 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2091 surface.update_clip_caps(view) 
    2092 File
    2093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2094 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2095 p.update_direction(cpos) 
    2096 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2097  
    2098 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2099  
    2100 File
    2101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2102 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2103 p.update_direction(cpos) 
    2104  
    2105 See log for complete Python traceback. 
    2106  
    2107 Traceback (most recent call last): 
    2108 File
    2109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2110 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2111 if not self.draw_new_frame(): 
    2112 File
    2113 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2114 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2115 surface.update_clip_caps(view) 
    2116 File
    2117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2118 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2119 p.update_direction(cpos) 
    2120 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2121  
    2122 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2123  
    2124 File
    2125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2126 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2127 p.update_direction(cpos) 
    2128  
    2129 See log for complete Python traceback. 
    2130  
    2131 Traceback (most recent call last): 
    2132 File
    2133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2134 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2135 if not self.draw_new_frame(): 
    2136 File
    2137 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2138 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2139 surface.update_clip_caps(view) 
    2140 File
    2141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2142 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2143 p.update_direction(cpos) 
    2144 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2145  
    2146 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2147  
    2148 File
    2149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2150 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2151 p.update_direction(cpos) 
    2152  
    2153 See log for complete Python traceback. 
    2154  
    2155 Traceback (most recent call last): 
    2156 File
    2157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2158 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2159 if not self.draw_new_frame(): 
    2160 File
    2161 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2162 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2163 surface.update_clip_caps(view) 
    2164 File
    2165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2166 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2167 p.update_direction(cpos) 
    2168 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2169  
    2170 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2171  
    2172 File
    2173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2174 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2175 p.update_direction(cpos) 
    2176  
    2177 See log for complete Python traceback. 
    2178  
    2179 Traceback (most recent call last): 
    2180 File
    2181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2182 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2183 if not self.draw_new_frame(): 
    2184 File
    2185 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2186 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2187 surface.update_clip_caps(view) 
    2188 File
    2189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2190 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2191 p.update_direction(cpos) 
    2192 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2193  
    2194 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2195  
    2196 File
    2197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2198 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2199 p.update_direction(cpos) 
    2200  
    2201 See log for complete Python traceback. 
    2202  
    2203 Traceback (most recent call last): 
    2204 File
    2205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2206 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2207 if not self.draw_new_frame(): 
    2208 File
    2209 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2210 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2211 surface.update_clip_caps(view) 
    2212 File
    2213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2214 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2215 p.update_direction(cpos) 
    2216 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2217  
    2218 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2219  
    2220 File
    2221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2222 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2223 p.update_direction(cpos) 
    2224  
    2225 See log for complete Python traceback. 
    2226  
    2227 Traceback (most recent call last): 
    2228 File
    2229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2230 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2231 if not self.draw_new_frame(): 
    2232 File
    2233 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2234 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2235 surface.update_clip_caps(view) 
    2236 File
    2237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2238 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2239 p.update_direction(cpos) 
    2240 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2241  
    2242 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2243  
    2244 File
    2245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2246 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2247 p.update_direction(cpos) 
    2248  
    2249 See log for complete Python traceback. 
    2250  
    2251 Traceback (most recent call last): 
    2252 File
    2253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2254 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2255 if not self.draw_new_frame(): 
    2256 File
    2257 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2258 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2259 surface.update_clip_caps(view) 
    2260 File
    2261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2262 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2263 p.update_direction(cpos) 
    2264 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2265  
    2266 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2267  
    2268 File
    2269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2270 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2271 p.update_direction(cpos) 
    2272  
    2273 See log for complete Python traceback. 
    2274  
    2275 Traceback (most recent call last): 
    2276 File
    2277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2278 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2279 if not self.draw_new_frame(): 
    2280 File
    2281 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2282 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2283 surface.update_clip_caps(view) 
    2284 File
    2285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2286 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2287 p.update_direction(cpos) 
    2288 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2289  
    2290 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2291  
    2292 File
    2293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2294 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2295 p.update_direction(cpos) 
    2296  
    2297 See log for complete Python traceback. 
    2298  
    2299 Traceback (most recent call last): 
    2300 File
    2301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2302 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2303 if not self.draw_new_frame(): 
    2304 File
    2305 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2306 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2307 surface.update_clip_caps(view) 
    2308 File
    2309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2310 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2311 p.update_direction(cpos) 
    2312 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2313  
    2314 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2315  
    2316 File
    2317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2318 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2319 p.update_direction(cpos) 
    2320  
    2321 See log for complete Python traceback. 
    2322  
    2323 Traceback (most recent call last): 
    2324 File
    2325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2326 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2327 if not self.draw_new_frame(): 
    2328 File
    2329 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2330 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2331 surface.update_clip_caps(view) 
    2332 File
    2333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2334 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2335 p.update_direction(cpos) 
    2336 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2337  
    2338 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2339  
    2340 File
    2341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2342 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2343 p.update_direction(cpos) 
    2344  
    2345 See log for complete Python traceback. 
    2346  
    2347 Traceback (most recent call last): 
    2348 File
    2349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2350 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2351 if not self.draw_new_frame(): 
    2352 File
    2353 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2354 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2355 surface.update_clip_caps(view) 
    2356 File
    2357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2358 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2359 p.update_direction(cpos) 
    2360 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2361  
    2362 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2363  
    2364 File
    2365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2366 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2367 p.update_direction(cpos) 
    2368  
    2369 See log for complete Python traceback. 
    2370  
    2371 Traceback (most recent call last): 
    2372 File
    2373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2374 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2375 if not self.draw_new_frame(): 
    2376 File
    2377 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2378 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2379 surface.update_clip_caps(view) 
    2380 File
    2381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2382 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2383 p.update_direction(cpos) 
    2384 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2385  
    2386 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2387  
    2388 File
    2389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2390 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2391 p.update_direction(cpos) 
    2392  
    2393 See log for complete Python traceback. 
    2394  
    2395 Traceback (most recent call last): 
    2396 File
    2397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2398 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2399 if not self.draw_new_frame(): 
    2400 File
    2401 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2402 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2403 surface.update_clip_caps(view) 
    2404 File
    2405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2406 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2407 p.update_direction(cpos) 
    2408 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2409  
    2410 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2411  
    2412 File
    2413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2414 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2415 p.update_direction(cpos) 
    2416  
    2417 See log for complete Python traceback. 
    2418  
    2419 Traceback (most recent call last): 
    2420 File
    2421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2422 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2423 if not self.draw_new_frame(): 
    2424 File
    2425 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2426 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2427 surface.update_clip_caps(view) 
    2428 File
    2429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2430 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2431 p.update_direction(cpos) 
    2432 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2433  
    2434 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2435  
    2436 File
    2437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2438 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2439 p.update_direction(cpos) 
    2440  
    2441 See log for complete Python traceback. 
    2442  
    2443 Traceback (most recent call last): 
    2444 File
    2445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2446 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2447 if not self.draw_new_frame(): 
    2448 File
    2449 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2450 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2451 surface.update_clip_caps(view) 
    2452 File
    2453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2454 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2455 p.update_direction(cpos) 
    2456 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2457  
    2458 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2459  
    2460 File
    2461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2462 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2463 p.update_direction(cpos) 
    2464  
    2465 See log for complete Python traceback. 
    2466  
    2467 Traceback (most recent call last): 
    2468 File
    2469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2470 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2471 if not self.draw_new_frame(): 
    2472 File
    2473 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2474 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2475 surface.update_clip_caps(view) 
    2476 File
    2477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2478 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2479 p.update_direction(cpos) 
    2480 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2481  
    2482 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2483  
    2484 File
    2485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2486 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2487 p.update_direction(cpos) 
    2488  
    2489 See log for complete Python traceback. 
    2490  
    2491 Traceback (most recent call last): 
    2492 File
    2493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2494 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2495 if not self.draw_new_frame(): 
    2496 File
    2497 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2498 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2499 surface.update_clip_caps(view) 
    2500 File
    2501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2502 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2503 p.update_direction(cpos) 
    2504 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2505  
    2506 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2507  
    2508 File
    2509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2510 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2511 p.update_direction(cpos) 
    2512  
    2513 See log for complete Python traceback. 
    2514  
    2515 Traceback (most recent call last): 
    2516 File
    2517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2518 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2519 if not self.draw_new_frame(): 
    2520 File
    2521 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2522 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2523 surface.update_clip_caps(view) 
    2524 File
    2525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2526 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2527 p.update_direction(cpos) 
    2528 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2529  
    2530 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2531  
    2532 File
    2533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2534 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2535 p.update_direction(cpos) 
    2536  
    2537 See log for complete Python traceback. 
    2538  
    2539 Traceback (most recent call last): 
    2540 File
    2541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2542 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2543 if not self.draw_new_frame(): 
    2544 File
    2545 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2546 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2547 surface.update_clip_caps(view) 
    2548 File
    2549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2550 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2551 p.update_direction(cpos) 
    2552 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2553  
    2554 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2555  
    2556 File
    2557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2558 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2559 p.update_direction(cpos) 
    2560  
    2561 See log for complete Python traceback. 
    2562  
    2563 Traceback (most recent call last): 
    2564 File
    2565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2566 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2567 if not self.draw_new_frame(): 
    2568 File
    2569 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2570 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2571 surface.update_clip_caps(view) 
    2572 File
    2573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2574 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2575 p.update_direction(cpos) 
    2576 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2577  
    2578 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2579  
    2580 File
    2581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2582 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2583 p.update_direction(cpos) 
    2584  
    2585 See log for complete Python traceback. 
    2586  
    2587 Traceback (most recent call last): 
    2588 File
    2589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2590 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2591 if not self.draw_new_frame(): 
    2592 File
    2593 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2594 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2595 surface.update_clip_caps(view) 
    2596 File
    2597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2598 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2599 p.update_direction(cpos) 
    2600 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2601  
    2602 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2603  
    2604 File
    2605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2606 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2607 p.update_direction(cpos) 
    2608  
    2609 See log for complete Python traceback. 
    2610  
    2611 Traceback (most recent call last): 
    2612 File
    2613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2614 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2615 if not self.draw_new_frame(): 
    2616 File
    2617 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2618 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2619 surface.update_clip_caps(view) 
    2620 File
    2621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2622 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2623 p.update_direction(cpos) 
    2624 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2625  
    2626 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2627  
    2628 File
    2629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2630 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2631 p.update_direction(cpos) 
    2632  
    2633 See log for complete Python traceback. 
    2634  
    2635 Traceback (most recent call last): 
    2636 File
    2637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2638 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2639 if not self.draw_new_frame(): 
    2640 File
    2641 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2642 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2643 surface.update_clip_caps(view) 
    2644 File
    2645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2646 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2647 p.update_direction(cpos) 
    2648 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2649  
    2650 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2651  
    2652 File
    2653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2654 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2655 p.update_direction(cpos) 
    2656  
    2657 See log for complete Python traceback. 
    2658  
    2659 Traceback (most recent call last): 
    2660 File
    2661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2662 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2663 if not self.draw_new_frame(): 
    2664 File
    2665 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2666 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2667 surface.update_clip_caps(view) 
    2668 File
    2669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2670 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2671 p.update_direction(cpos) 
    2672 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2673  
    2674 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2675  
    2676 File
    2677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2678 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2679 p.update_direction(cpos) 
    2680  
    2681 See log for complete Python traceback. 
    2682  
    2683 Traceback (most recent call last): 
    2684 File
    2685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2686 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2687 if not self.draw_new_frame(): 
    2688 File
    2689 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2690 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2691 surface.update_clip_caps(view) 
    2692 File
    2693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2694 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2695 p.update_direction(cpos) 
    2696 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2697  
    2698 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2699  
    2700 File
    2701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2702 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2703 p.update_direction(cpos) 
    2704  
    2705 See log for complete Python traceback. 
    2706  
    2707 Traceback (most recent call last): 
    2708 File
    2709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2710 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2711 if not self.draw_new_frame(): 
    2712 File
    2713 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2714 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2715 surface.update_clip_caps(view) 
    2716 File
    2717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2718 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2719 p.update_direction(cpos) 
    2720 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2721  
    2722 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2723  
    2724 File
    2725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2726 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2727 p.update_direction(cpos) 
    2728  
    2729 See log for complete Python traceback. 
    2730  
    2731 Traceback (most recent call last): 
    2732 File
    2733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2734 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2735 if not self.draw_new_frame(): 
    2736 File
    2737 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2738 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2739 surface.update_clip_caps(view) 
    2740 File
    2741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2742 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2743 p.update_direction(cpos) 
    2744 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2745  
    2746 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2747  
    2748 File
    2749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2750 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2751 p.update_direction(cpos) 
    2752  
    2753 See log for complete Python traceback. 
    2754  
    2755 Traceback (most recent call last): 
    2756 File
    2757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2758 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2759 if not self.draw_new_frame(): 
    2760 File
    2761 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2762 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2763 surface.update_clip_caps(view) 
    2764 File
    2765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2766 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2767 p.update_direction(cpos) 
    2768 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2769  
    2770 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2771  
    2772 File
    2773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2774 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2775 p.update_direction(cpos) 
    2776  
    2777 See log for complete Python traceback. 
    2778  
    2779 Traceback (most recent call last): 
    2780 File
    2781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2782 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2783 if not self.draw_new_frame(): 
    2784 File
    2785 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2786 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2787 surface.update_clip_caps(view) 
    2788 File
    2789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2790 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2791 p.update_direction(cpos) 
    2792 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2793  
    2794 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2795  
    2796 File
    2797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2798 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2799 p.update_direction(cpos) 
    2800  
    2801 See log for complete Python traceback. 
    2802  
    2803 Traceback (most recent call last): 
    2804 File
    2805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2806 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2807 if not self.draw_new_frame(): 
    2808 File
    2809 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2810 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2811 surface.update_clip_caps(view) 
    2812 File
    2813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2814 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2815 p.update_direction(cpos) 
    2816 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2817  
    2818 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2819  
    2820 File
    2821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2822 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2823 p.update_direction(cpos) 
    2824  
    2825 See log for complete Python traceback. 
    2826  
    2827 Traceback (most recent call last): 
    2828 File
    2829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2830 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2831 if not self.draw_new_frame(): 
    2832 File
    2833 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2834 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2835 surface.update_clip_caps(view) 
    2836 File
    2837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2838 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2839 p.update_direction(cpos) 
    2840 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2841  
    2842 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2843  
    2844 File
    2845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2846 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2847 p.update_direction(cpos) 
    2848  
    2849 See log for complete Python traceback. 
    2850  
    2851 Traceback (most recent call last): 
    2852 File
    2853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2854 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2855 if not self.draw_new_frame(): 
    2856 File
    2857 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2858 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2859 surface.update_clip_caps(view) 
    2860 File
    2861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2862 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2863 p.update_direction(cpos) 
    2864 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2865  
    2866 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2867  
    2868 File
    2869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2870 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2871 p.update_direction(cpos) 
    2872  
    2873 See log for complete Python traceback. 
    2874  
    2875 Traceback (most recent call last): 
    2876 File
    2877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2878 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2879 if not self.draw_new_frame(): 
    2880 File
    2881 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2882 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2883 surface.update_clip_caps(view) 
    2884 File
    2885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2886 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2887 p.update_direction(cpos) 
    2888 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2889  
    2890 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2891  
    2892 File
    2893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2894 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2895 p.update_direction(cpos) 
    2896  
    2897 See log for complete Python traceback. 
    2898  
    2899 Traceback (most recent call last): 
    2900 File
    2901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2902 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2903 if not self.draw_new_frame(): 
    2904 File
    2905 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2906 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2907 surface.update_clip_caps(view) 
    2908 File
    2909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2910 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2911 p.update_direction(cpos) 
    2912 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2913  
    2914 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2915  
    2916 File
    2917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2918 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2919 p.update_direction(cpos) 
    2920  
    2921 See log for complete Python traceback. 
    2922  
    2923 Traceback (most recent call last): 
    2924 File
    2925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2926 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2927 if not self.draw_new_frame(): 
    2928 File
    2929 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2930 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2931 surface.update_clip_caps(view) 
    2932 File
    2933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2934 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2935 p.update_direction(cpos) 
    2936 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2937  
    2938 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2939  
    2940 File
    2941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2942 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2943 p.update_direction(cpos) 
    2944  
    2945 See log for complete Python traceback. 
    2946  
    2947 Traceback (most recent call last): 
    2948 File
    2949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2950 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2951 if not self.draw_new_frame(): 
    2952 File
    2953 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2954 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2955 surface.update_clip_caps(view) 
    2956 File
    2957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2958 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2959 p.update_direction(cpos) 
    2960 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2961  
    2962 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2963  
    2964 File
    2965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2966 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2967 p.update_direction(cpos) 
    2968  
    2969 See log for complete Python traceback. 
    2970  
    2971 Traceback (most recent call last): 
    2972 File
    2973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2974 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2975 if not self.draw_new_frame(): 
    2976 File
    2977 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2978 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    2979 surface.update_clip_caps(view) 
    2980 File
    2981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2982 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2983 p.update_direction(cpos) 
    2984 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2985  
    2986 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    2987  
    2988 File
    2989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2990 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    2991 p.update_direction(cpos) 
    2992  
    2993 See log for complete Python traceback. 
    2994  
    2995 Traceback (most recent call last): 
    2996 File
    2997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    2998 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    2999 if not self.draw_new_frame(): 
    3000 File
    3001 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3002 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3003 surface.update_clip_caps(view) 
    3004 File
    3005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3006 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3007 p.update_direction(cpos) 
    3008 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3009  
    3010 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3011  
    3012 File
    3013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3014 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3015 p.update_direction(cpos) 
    3016  
    3017 See log for complete Python traceback. 
    3018  
    3019 Traceback (most recent call last): 
    3020 File
    3021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3022 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3023 if not self.draw_new_frame(): 
    3024 File
    3025 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3026 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3027 surface.update_clip_caps(view) 
    3028 File
    3029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3030 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3031 p.update_direction(cpos) 
    3032 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3033  
    3034 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3035  
    3036 File
    3037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3038 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3039 p.update_direction(cpos) 
    3040  
    3041 See log for complete Python traceback. 
    3042  
    3043 Traceback (most recent call last): 
    3044 File
    3045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3046 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3047 if not self.draw_new_frame(): 
    3048 File
    3049 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3050 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3051 surface.update_clip_caps(view) 
    3052 File
    3053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3054 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3055 p.update_direction(cpos) 
    3056 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3057  
    3058 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3059  
    3060 File
    3061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3062 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3063 p.update_direction(cpos) 
    3064  
    3065 See log for complete Python traceback. 
    3066  
    3067 Traceback (most recent call last): 
    3068 File
    3069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3070 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3071 if not self.draw_new_frame(): 
    3072 File
    3073 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3074 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3075 surface.update_clip_caps(view) 
    3076 File
    3077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3078 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3079 p.update_direction(cpos) 
    3080 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3081  
    3082 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3083  
    3084 File
    3085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3086 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3087 p.update_direction(cpos) 
    3088  
    3089 See log for complete Python traceback. 
    3090  
    3091 Traceback (most recent call last): 
    3092 File
    3093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3094 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3095 if not self.draw_new_frame(): 
    3096 File
    3097 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3098 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3099 surface.update_clip_caps(view) 
    3100 File
    3101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3102 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3103 p.update_direction(cpos) 
    3104 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3105  
    3106 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3107  
    3108 File
    3109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3110 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3111 p.update_direction(cpos) 
    3112  
    3113 See log for complete Python traceback. 
    3114  
    3115 Traceback (most recent call last): 
    3116 File
    3117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3118 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3119 if not self.draw_new_frame(): 
    3120 File
    3121 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3122 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3123 surface.update_clip_caps(view) 
    3124 File
    3125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3126 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3127 p.update_direction(cpos) 
    3128 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3129  
    3130 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3131  
    3132 File
    3133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3134 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3135 p.update_direction(cpos) 
    3136  
    3137 See log for complete Python traceback. 
    3138  
    3139 Traceback (most recent call last): 
    3140 File
    3141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3142 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3143 if not self.draw_new_frame(): 
    3144 File
    3145 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3146 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3147 surface.update_clip_caps(view) 
    3148 File
    3149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3150 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3151 p.update_direction(cpos) 
    3152 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3153  
    3154 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3155  
    3156 File
    3157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3158 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3159 p.update_direction(cpos) 
    3160  
    3161 See log for complete Python traceback. 
    3162  
    3163 Traceback (most recent call last): 
    3164 File
    3165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3166 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3167 if not self.draw_new_frame(): 
    3168 File
    3169 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3170 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3171 surface.update_clip_caps(view) 
    3172 File
    3173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3174 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3175 p.update_direction(cpos) 
    3176 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3177  
    3178 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3179  
    3180 File
    3181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3182 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3183 p.update_direction(cpos) 
    3184  
    3185 See log for complete Python traceback. 
    3186  
    3187 Traceback (most recent call last): 
    3188 File
    3189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3190 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3191 if not self.draw_new_frame(): 
    3192 File
    3193 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3194 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3195 surface.update_clip_caps(view) 
    3196 File
    3197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3198 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3199 p.update_direction(cpos) 
    3200 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3201  
    3202 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3203  
    3204 File
    3205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3206 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3207 p.update_direction(cpos) 
    3208  
    3209 See log for complete Python traceback. 
    3210  
    3211 Traceback (most recent call last): 
    3212 File
    3213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3214 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3215 if not self.draw_new_frame(): 
    3216 File
    3217 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3218 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3219 surface.update_clip_caps(view) 
    3220 File
    3221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3222 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3223 p.update_direction(cpos) 
    3224 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3225  
    3226 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3227  
    3228 File
    3229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3230 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3231 p.update_direction(cpos) 
    3232  
    3233 See log for complete Python traceback. 
    3234  
    3235 Traceback (most recent call last): 
    3236 File
    3237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3238 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3239 if not self.draw_new_frame(): 
    3240 File
    3241 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3242 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3243 surface.update_clip_caps(view) 
    3244 File
    3245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3246 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3247 p.update_direction(cpos) 
    3248 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3249  
    3250 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3251  
    3252 File
    3253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3254 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3255 p.update_direction(cpos) 
    3256  
    3257 See log for complete Python traceback. 
    3258  
    3259 Traceback (most recent call last): 
    3260 File
    3261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3262 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3263 if not self.draw_new_frame(): 
    3264 File
    3265 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3266 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3267 surface.update_clip_caps(view) 
    3268 File
    3269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3270 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3271 p.update_direction(cpos) 
    3272 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3273  
    3274 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3275  
    3276 File
    3277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3278 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3279 p.update_direction(cpos) 
    3280  
    3281 See log for complete Python traceback. 
    3282  
    3283 Traceback (most recent call last): 
    3284 File
    3285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3286 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3287 if not self.draw_new_frame(): 
    3288 File
    3289 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3290 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3291 surface.update_clip_caps(view) 
    3292 File
    3293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3294 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3295 p.update_direction(cpos) 
    3296 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3297  
    3298 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3299  
    3300 File
    3301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3302 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3303 p.update_direction(cpos) 
    3304  
    3305 See log for complete Python traceback. 
    3306  
    3307 Traceback (most recent call last): 
    3308 File
    3309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3310 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3311 if not self.draw_new_frame(): 
    3312 File
    3313 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3314 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3315 surface.update_clip_caps(view) 
    3316 File
    3317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3318 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3319 p.update_direction(cpos) 
    3320 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3321  
    3322 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3323  
    3324 File
    3325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3326 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3327 p.update_direction(cpos) 
    3328  
    3329 See log for complete Python traceback. 
    3330  
    3331 Traceback (most recent call last): 
    3332 File
    3333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3334 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3335 if not self.draw_new_frame(): 
    3336 File
    3337 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3338 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3339 surface.update_clip_caps(view) 
    3340 File
    3341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3342 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3343 p.update_direction(cpos) 
    3344 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3345  
    3346 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3347  
    3348 File
    3349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3350 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3351 p.update_direction(cpos) 
    3352  
    3353 See log for complete Python traceback. 
    3354  
    3355 Traceback (most recent call last): 
    3356 File
    3357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3358 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3359 if not self.draw_new_frame(): 
    3360 File
    3361 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3362 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3363 surface.update_clip_caps(view) 
    3364 File
    3365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3366 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3367 p.update_direction(cpos) 
    3368 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3369  
    3370 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3371  
    3372 File
    3373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3374 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3375 p.update_direction(cpos) 
    3376  
    3377 See log for complete Python traceback. 
    3378  
    3379 Traceback (most recent call last): 
    3380 File
    3381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3382 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3383 if not self.draw_new_frame(): 
    3384 File
    3385 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3386 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3387 surface.update_clip_caps(view) 
    3388 File
    3389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3390 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3391 p.update_direction(cpos) 
    3392 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3393  
    3394 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3395  
    3396 File
    3397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3398 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3399 p.update_direction(cpos) 
    3400  
    3401 See log for complete Python traceback. 
    3402  
    3403 Traceback (most recent call last): 
    3404 File
    3405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3406 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3407 if not self.draw_new_frame(): 
    3408 File
    3409 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3410 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3411 surface.update_clip_caps(view) 
    3412 File
    3413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3414 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3415 p.update_direction(cpos) 
    3416 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3417  
    3418 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3419  
    3420 File
    3421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3422 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3423 p.update_direction(cpos) 
    3424  
    3425 See log for complete Python traceback. 
    3426  
    3427 Traceback (most recent call last): 
    3428 File
    3429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3430 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3431 if not self.draw_new_frame(): 
    3432 File
    3433 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3434 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3435 surface.update_clip_caps(view) 
    3436 File
    3437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3438 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3439 p.update_direction(cpos) 
    3440 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3441  
    3442 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3443  
    3444 File
    3445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3446 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3447 p.update_direction(cpos) 
    3448  
    3449 See log for complete Python traceback. 
    3450  
    3451 Traceback (most recent call last): 
    3452 File
    3453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3454 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3455 if not self.draw_new_frame(): 
    3456 File
    3457 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3458 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3459 surface.update_clip_caps(view) 
    3460 File
    3461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3462 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3463 p.update_direction(cpos) 
    3464 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3465  
    3466 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3467  
    3468 File
    3469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3470 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3471 p.update_direction(cpos) 
    3472  
    3473 See log for complete Python traceback. 
    3474  
    3475 Traceback (most recent call last): 
    3476 File
    3477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3478 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3479 if not self.draw_new_frame(): 
    3480 File
    3481 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3482 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3483 surface.update_clip_caps(view) 
    3484 File
    3485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3486 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3487 p.update_direction(cpos) 
    3488 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3489  
    3490 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3491  
    3492 File
    3493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3494 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3495 p.update_direction(cpos) 
    3496  
    3497 See log for complete Python traceback. 
    3498  
    3499 Traceback (most recent call last): 
    3500 File
    3501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3502 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3503 if not self.draw_new_frame(): 
    3504 File
    3505 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3506 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3507 surface.update_clip_caps(view) 
    3508 File
    3509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3510 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3511 p.update_direction(cpos) 
    3512 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3513  
    3514 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3515  
    3516 File
    3517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3518 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3519 p.update_direction(cpos) 
    3520  
    3521 See log for complete Python traceback. 
    3522  
    3523 Traceback (most recent call last): 
    3524 File
    3525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3526 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3527 if not self.draw_new_frame(): 
    3528 File
    3529 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3530 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3531 surface.update_clip_caps(view) 
    3532 File
    3533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3534 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3535 p.update_direction(cpos) 
    3536 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3537  
    3538 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3539  
    3540 File
    3541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3542 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3543 p.update_direction(cpos) 
    3544  
    3545 See log for complete Python traceback. 
    3546  
    3547 Traceback (most recent call last): 
    3548 File
    3549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3550 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3551 if not self.draw_new_frame(): 
    3552 File
    3553 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3554 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3555 surface.update_clip_caps(view) 
    3556 File
    3557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3558 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3559 p.update_direction(cpos) 
    3560 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3561  
    3562 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3563  
    3564 File
    3565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3566 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3567 p.update_direction(cpos) 
    3568  
    3569 See log for complete Python traceback. 
    3570  
    3571 Traceback (most recent call last): 
    3572 File
    3573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3574 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3575 if not self.draw_new_frame(): 
    3576 File
    3577 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3578 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3579 surface.update_clip_caps(view) 
    3580 File
    3581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3582 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3583 p.update_direction(cpos) 
    3584 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3585  
    3586 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3587  
    3588 File
    3589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3590 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3591 p.update_direction(cpos) 
    3592  
    3593 See log for complete Python traceback. 
    3594  
    3595 Traceback (most recent call last): 
    3596 File
    3597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3598 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3599 if not self.draw_new_frame(): 
    3600 File
    3601 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3602 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3603 surface.update_clip_caps(view) 
    3604 File
    3605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3606 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3607 p.update_direction(cpos) 
    3608 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3609  
    3610 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3611  
    3612 File
    3613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3614 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3615 p.update_direction(cpos) 
    3616  
    3617 See log for complete Python traceback. 
    3618  
    3619 Traceback (most recent call last): 
    3620 File
    3621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3622 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3623 if not self.draw_new_frame(): 
    3624 File
    3625 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3626 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3627 surface.update_clip_caps(view) 
    3628 File
    3629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3630 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3631 p.update_direction(cpos) 
    3632 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3633  
    3634 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3635  
    3636 File
    3637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3638 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3639 p.update_direction(cpos) 
    3640  
    3641 See log for complete Python traceback. 
    3642  
    3643 Traceback (most recent call last): 
    3644 File
    3645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3646 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3647 if not self.draw_new_frame(): 
    3648 File
    3649 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3650 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3651 surface.update_clip_caps(view) 
    3652 File
    3653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3654 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3655 p.update_direction(cpos) 
    3656 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3657  
    3658 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3659  
    3660 File
    3661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3662 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3663 p.update_direction(cpos) 
    3664  
    3665 See log for complete Python traceback. 
    3666  
    3667 Traceback (most recent call last): 
    3668 File
    3669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3670 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3671 if not self.draw_new_frame(): 
    3672 File
    3673 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3674 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3675 surface.update_clip_caps(view) 
    3676 File
    3677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3678 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3679 p.update_direction(cpos) 
    3680 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3681  
    3682 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3683  
    3684 File
    3685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3686 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3687 p.update_direction(cpos) 
    3688  
    3689 See log for complete Python traceback. 
    3690  
    3691 Traceback (most recent call last): 
    3692 File
    3693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3694 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3695 if not self.draw_new_frame(): 
    3696 File
    3697 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3698 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3699 surface.update_clip_caps(view) 
    3700 File
    3701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3702 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3703 p.update_direction(cpos) 
    3704 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3705  
    3706 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3707  
    3708 File
    3709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3710 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3711 p.update_direction(cpos) 
    3712  
    3713 See log for complete Python traceback. 
    3714  
    3715 Traceback (most recent call last): 
    3716 File
    3717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3718 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3719 if not self.draw_new_frame(): 
    3720 File
    3721 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3722 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3723 surface.update_clip_caps(view) 
    3724 File
    3725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3726 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3727 p.update_direction(cpos) 
    3728 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3729  
    3730 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3731  
    3732 File
    3733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3734 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3735 p.update_direction(cpos) 
    3736  
    3737 See log for complete Python traceback. 
    3738  
    3739 Traceback (most recent call last): 
    3740 File
    3741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3742 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3743 if not self.draw_new_frame(): 
    3744 File
    3745 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3746 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3747 surface.update_clip_caps(view) 
    3748 File
    3749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3750 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3751 p.update_direction(cpos) 
    3752 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3753  
    3754 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3755  
    3756 File
    3757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3758 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3759 p.update_direction(cpos) 
    3760  
    3761 See log for complete Python traceback. 
    3762  
    3763 Traceback (most recent call last): 
    3764 File
    3765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3766 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3767 if not self.draw_new_frame(): 
    3768 File
    3769 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3770 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3771 surface.update_clip_caps(view) 
    3772 File
    3773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3774 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3775 p.update_direction(cpos) 
    3776 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3777  
    3778 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3779  
    3780 File
    3781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3782 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3783 p.update_direction(cpos) 
    3784  
    3785 See log for complete Python traceback. 
    3786  
    3787 Traceback (most recent call last): 
    3788 File
    3789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3790 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3791 if not self.draw_new_frame(): 
    3792 File
    3793 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3794 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3795 surface.update_clip_caps(view) 
    3796 File
    3797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3798 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3799 p.update_direction(cpos) 
    3800 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3801  
    3802 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3803  
    3804 File
    3805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3806 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3807 p.update_direction(cpos) 
    3808  
    3809 See log for complete Python traceback. 
    3810  
    3811 Traceback (most recent call last): 
    3812 File
    3813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3814 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3815 if not self.draw_new_frame(): 
    3816 File
    3817 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3818 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3819 surface.update_clip_caps(view) 
    3820 File
    3821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3822 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3823 p.update_direction(cpos) 
    3824 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3825  
    3826 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3827  
    3828 File
    3829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3830 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3831 p.update_direction(cpos) 
    3832  
    3833 See log for complete Python traceback. 
    3834  
    3835 Traceback (most recent call last): 
    3836 File
    3837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3838 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3839 if not self.draw_new_frame(): 
    3840 File
    3841 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3842 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3843 surface.update_clip_caps(view) 
    3844 File
    3845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3846 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3847 p.update_direction(cpos) 
    3848 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3849  
    3850 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3851  
    3852 File
    3853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3854 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3855 p.update_direction(cpos) 
    3856  
    3857 See log for complete Python traceback. 
    3858  
    3859 Traceback (most recent call last): 
    3860 File
    3861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3862 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3863 if not self.draw_new_frame(): 
    3864 File
    3865 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3866 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3867 surface.update_clip_caps(view) 
    3868 File
    3869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3870 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3871 p.update_direction(cpos) 
    3872 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3873  
    3874 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3875  
    3876 File
    3877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3878 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3879 p.update_direction(cpos) 
    3880  
    3881 See log for complete Python traceback. 
    3882  
    3883 Traceback (most recent call last): 
    3884 File
    3885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3886 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3887 if not self.draw_new_frame(): 
    3888 File
    3889 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3890 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3891 surface.update_clip_caps(view) 
    3892 File
    3893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3894 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3895 p.update_direction(cpos) 
    3896 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3897  
    3898 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3899  
    3900 File
    3901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3902 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3903 p.update_direction(cpos) 
    3904  
    3905 See log for complete Python traceback. 
    3906  
    3907 Traceback (most recent call last): 
    3908 File
    3909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3910 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3911 if not self.draw_new_frame(): 
    3912 File
    3913 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3914 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3915 surface.update_clip_caps(view) 
    3916 File
    3917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3918 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3919 p.update_direction(cpos) 
    3920 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3921  
    3922 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3923  
    3924 File
    3925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3926 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3927 p.update_direction(cpos) 
    3928  
    3929 See log for complete Python traceback. 
    3930  
    3931 Traceback (most recent call last): 
    3932 File
    3933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3934 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3935 if not self.draw_new_frame(): 
    3936 File
    3937 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3938 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3939 surface.update_clip_caps(view) 
    3940 File
    3941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3942 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3943 p.update_direction(cpos) 
    3944 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3945  
    3946 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3947  
    3948 File
    3949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3950 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3951 p.update_direction(cpos) 
    3952  
    3953 See log for complete Python traceback. 
    3954  
    3955 Traceback (most recent call last): 
    3956 File
    3957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3958 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3959 if not self.draw_new_frame(): 
    3960 File
    3961 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3962 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3963 surface.update_clip_caps(view) 
    3964 File
    3965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3966 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3967 p.update_direction(cpos) 
    3968 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3969  
    3970 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3971  
    3972 File
    3973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3974 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3975 p.update_direction(cpos) 
    3976  
    3977 See log for complete Python traceback. 
    3978  
    3979 Traceback (most recent call last): 
    3980 File
    3981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3982 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    3983 if not self.draw_new_frame(): 
    3984 File
    3985 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3986 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    3987 surface.update_clip_caps(view) 
    3988 File
    3989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3990 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3991 p.update_direction(cpos) 
    3992 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3993  
    3994 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    3995  
    3996 File
    3997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    3998 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    3999 p.update_direction(cpos) 
    4000  
    4001 See log for complete Python traceback. 
    4002  
    4003 Traceback (most recent call last): 
    4004 File
    4005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4006 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4007 if not self.draw_new_frame(): 
    4008 File
    4009 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4010 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4011 surface.update_clip_caps(view) 
    4012 File
    4013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4014 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4015 p.update_direction(cpos) 
    4016 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4017  
    4018 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4019  
    4020 File
    4021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4022 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4023 p.update_direction(cpos) 
    4024  
    4025 See log for complete Python traceback. 
    4026  
    4027 Traceback (most recent call last): 
    4028 File
    4029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4030 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4031 if not self.draw_new_frame(): 
    4032 File
    4033 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4034 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4035 surface.update_clip_caps(view) 
    4036 File
    4037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4038 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4039 p.update_direction(cpos) 
    4040 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4041  
    4042 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4043  
    4044 File
    4045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4046 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4047 p.update_direction(cpos) 
    4048  
    4049 See log for complete Python traceback. 
    4050  
    4051 Traceback (most recent call last): 
    4052 File
    4053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4054 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4055 if not self.draw_new_frame(): 
    4056 File
    4057 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4058 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4059 surface.update_clip_caps(view) 
    4060 File
    4061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4062 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4063 p.update_direction(cpos) 
    4064 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4065  
    4066 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4067  
    4068 File
    4069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4070 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4071 p.update_direction(cpos) 
    4072  
    4073 See log for complete Python traceback. 
    4074  
    4075 Traceback (most recent call last): 
    4076 File
    4077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4078 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4079 if not self.draw_new_frame(): 
    4080 File
    4081 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4082 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4083 surface.update_clip_caps(view) 
    4084 File
    4085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4086 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4087 p.update_direction(cpos) 
    4088 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4089  
    4090 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4091  
    4092 File
    4093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4094 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4095 p.update_direction(cpos) 
    4096  
    4097 See log for complete Python traceback. 
    4098  
    4099 Traceback (most recent call last): 
    4100 File
    4101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4102 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4103 if not self.draw_new_frame(): 
    4104 File
    4105 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4106 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4107 surface.update_clip_caps(view) 
    4108 File
    4109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4110 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4111 p.update_direction(cpos) 
    4112 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4113  
    4114 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4115  
    4116 File
    4117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4118 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4119 p.update_direction(cpos) 
    4120  
    4121 See log for complete Python traceback. 
    4122  
    4123 Traceback (most recent call last): 
    4124 File
    4125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4126 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4127 if not self.draw_new_frame(): 
    4128 File
    4129 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4130 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4131 surface.update_clip_caps(view) 
    4132 File
    4133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4134 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4135 p.update_direction(cpos) 
    4136 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4137  
    4138 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4139  
    4140 File
    4141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4142 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4143 p.update_direction(cpos) 
    4144  
    4145 See log for complete Python traceback. 
    4146  
    4147 Traceback (most recent call last): 
    4148 File
    4149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4150 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4151 if not self.draw_new_frame(): 
    4152 File
    4153 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4154 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4155 surface.update_clip_caps(view) 
    4156 File
    4157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4158 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4159 p.update_direction(cpos) 
    4160 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4161  
    4162 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4163  
    4164 File
    4165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4166 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4167 p.update_direction(cpos) 
    4168  
    4169 See log for complete Python traceback. 
    4170  
    4171 Traceback (most recent call last): 
    4172 File
    4173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4174 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4175 if not self.draw_new_frame(): 
    4176 File
    4177 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4178 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4179 surface.update_clip_caps(view) 
    4180 File
    4181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4182 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4183 p.update_direction(cpos) 
    4184 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4185  
    4186 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4187  
    4188 File
    4189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4190 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4191 p.update_direction(cpos) 
    4192  
    4193 See log for complete Python traceback. 
    4194  
    4195 Traceback (most recent call last): 
    4196 File
    4197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4198 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4199 if not self.draw_new_frame(): 
    4200 File
    4201 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4202 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4203 surface.update_clip_caps(view) 
    4204 File
    4205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4206 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4207 p.update_direction(cpos) 
    4208 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4209  
    4210 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4211  
    4212 File
    4213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4214 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4215 p.update_direction(cpos) 
    4216  
    4217 See log for complete Python traceback. 
    4218  
    4219 Traceback (most recent call last): 
    4220 File
    4221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4222 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4223 if not self.draw_new_frame(): 
    4224 File
    4225 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4226 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4227 surface.update_clip_caps(view) 
    4228 File
    4229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4230 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4231 p.update_direction(cpos) 
    4232 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4233  
    4234 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4235  
    4236 File
    4237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4238 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4239 p.update_direction(cpos) 
    4240  
    4241 See log for complete Python traceback. 
    4242  
    4243 Traceback (most recent call last): 
    4244 File
    4245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4246 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4247 if not self.draw_new_frame(): 
    4248 File
    4249 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4250 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4251 surface.update_clip_caps(view) 
    4252 File
    4253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4254 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4255 p.update_direction(cpos) 
    4256 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4257  
    4258 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4259  
    4260 File
    4261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4262 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4263 p.update_direction(cpos) 
    4264  
    4265 See log for complete Python traceback. 
    4266  
    4267 Traceback (most recent call last): 
    4268 File
    4269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4270 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4271 if not self.draw_new_frame(): 
    4272 File
    4273 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4274 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4275 surface.update_clip_caps(view) 
    4276 File
    4277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4278 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4279 p.update_direction(cpos) 
    4280 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4281  
    4282 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4283  
    4284 File
    4285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4286 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4287 p.update_direction(cpos) 
    4288  
    4289 See log for complete Python traceback. 
    4290  
    4291 Traceback (most recent call last): 
    4292 File
    4293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4294 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4295 if not self.draw_new_frame(): 
    4296 File
    4297 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4298 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4299 surface.update_clip_caps(view) 
    4300 File
    4301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4302 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4303 p.update_direction(cpos) 
    4304 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4305  
    4306 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4307  
    4308 File
    4309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4310 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4311 p.update_direction(cpos) 
    4312  
    4313 See log for complete Python traceback. 
    4314  
    4315 Traceback (most recent call last): 
    4316 File
    4317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4318 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4319 if not self.draw_new_frame(): 
    4320 File
    4321 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4322 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4323 surface.update_clip_caps(view) 
    4324 File
    4325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4326 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4327 p.update_direction(cpos) 
    4328 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4329  
    4330 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4331  
    4332 File
    4333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4334 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4335 p.update_direction(cpos) 
    4336  
    4337 See log for complete Python traceback. 
    4338  
    4339 Traceback (most recent call last): 
    4340 File
    4341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4342 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4343 if not self.draw_new_frame(): 
    4344 File
    4345 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4346 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4347 surface.update_clip_caps(view) 
    4348 File
    4349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4350 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4351 p.update_direction(cpos) 
    4352 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4353  
    4354 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4355  
    4356 File
    4357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4358 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4359 p.update_direction(cpos) 
    4360  
    4361 See log for complete Python traceback. 
    4362  
    4363 Traceback (most recent call last): 
    4364 File
    4365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4366 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4367 if not self.draw_new_frame(): 
    4368 File
    4369 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4370 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4371 surface.update_clip_caps(view) 
    4372 File
    4373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4374 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4375 p.update_direction(cpos) 
    4376 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4377  
    4378 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4379  
    4380 File
    4381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4382 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4383 p.update_direction(cpos) 
    4384  
    4385 See log for complete Python traceback. 
    4386  
    4387 Traceback (most recent call last): 
    4388 File
    4389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4390 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4391 if not self.draw_new_frame(): 
    4392 File
    4393 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4394 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4395 surface.update_clip_caps(view) 
    4396 File
    4397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4398 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4399 p.update_direction(cpos) 
    4400 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4401  
    4402 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4403  
    4404 File
    4405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4406 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4407 p.update_direction(cpos) 
    4408  
    4409 See log for complete Python traceback. 
    4410  
    4411 Traceback (most recent call last): 
    4412 File
    4413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4414 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4415 if not self.draw_new_frame(): 
    4416 File
    4417 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4418 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4419 surface.update_clip_caps(view) 
    4420 File
    4421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4422 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4423 p.update_direction(cpos) 
    4424 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4425  
    4426 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4427  
    4428 File
    4429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4430 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4431 p.update_direction(cpos) 
    4432  
    4433 See log for complete Python traceback. 
    4434  
    4435 Traceback (most recent call last): 
    4436 File
    4437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4438 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4439 if not self.draw_new_frame(): 
    4440 File
    4441 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4442 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4443 surface.update_clip_caps(view) 
    4444 File
    4445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4446 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4447 p.update_direction(cpos) 
    4448 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4449  
    4450 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4451  
    4452 File
    4453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4454 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4455 p.update_direction(cpos) 
    4456  
    4457 See log for complete Python traceback. 
    4458  
    4459 Traceback (most recent call last): 
    4460 File
    4461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4462 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4463 if not self.draw_new_frame(): 
    4464 File
    4465 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4466 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4467 surface.update_clip_caps(view) 
    4468 File
    4469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4470 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4471 p.update_direction(cpos) 
    4472 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4473  
    4474 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4475  
    4476 File
    4477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4478 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4479 p.update_direction(cpos) 
    4480  
    4481 See log for complete Python traceback. 
    4482  
    4483 Traceback (most recent call last): 
    4484 File
    4485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4486 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4487 if not self.draw_new_frame(): 
    4488 File
    4489 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4490 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4491 surface.update_clip_caps(view) 
    4492 File
    4493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4494 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4495 p.update_direction(cpos) 
    4496 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4497  
    4498 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4499  
    4500 File
    4501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4502 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4503 p.update_direction(cpos) 
    4504  
    4505 See log for complete Python traceback. 
    4506  
    4507 Traceback (most recent call last): 
    4508 File
    4509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4510 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4511 if not self.draw_new_frame(): 
    4512 File
    4513 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4514 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4515 surface.update_clip_caps(view) 
    4516 File
    4517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4518 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4519 p.update_direction(cpos) 
    4520 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4521  
    4522 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4523  
    4524 File
    4525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4526 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4527 p.update_direction(cpos) 
    4528  
    4529 See log for complete Python traceback. 
    4530  
    4531 Traceback (most recent call last): 
    4532 File
    4533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4534 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4535 if not self.draw_new_frame(): 
    4536 File
    4537 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4538 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4539 surface.update_clip_caps(view) 
    4540 File
    4541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4542 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4543 p.update_direction(cpos) 
    4544 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4545  
    4546 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4547  
    4548 File
    4549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4550 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4551 p.update_direction(cpos) 
    4552  
    4553 See log for complete Python traceback. 
    4554  
    4555 Traceback (most recent call last): 
    4556 File
    4557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4558 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4559 if not self.draw_new_frame(): 
    4560 File
    4561 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4562 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4563 surface.update_clip_caps(view) 
    4564 File
    4565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4566 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4567 p.update_direction(cpos) 
    4568 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4569  
    4570 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4571  
    4572 File
    4573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4574 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4575 p.update_direction(cpos) 
    4576  
    4577 See log for complete Python traceback. 
    4578  
    4579 Traceback (most recent call last): 
    4580 File
    4581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4582 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4583 if not self.draw_new_frame(): 
    4584 File
    4585 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4586 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4587 surface.update_clip_caps(view) 
    4588 File
    4589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4590 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4591 p.update_direction(cpos) 
    4592 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4593  
    4594 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4595  
    4596 File
    4597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4598 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4599 p.update_direction(cpos) 
    4600  
    4601 See log for complete Python traceback. 
    4602  
    4603 Traceback (most recent call last): 
    4604 File
    4605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4606 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4607 if not self.draw_new_frame(): 
    4608 File
    4609 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4610 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4611 surface.update_clip_caps(view) 
    4612 File
    4613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4614 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4615 p.update_direction(cpos) 
    4616 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4617  
    4618 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4619  
    4620 File
    4621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4622 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4623 p.update_direction(cpos) 
    4624  
    4625 See log for complete Python traceback. 
    4626  
    4627 Traceback (most recent call last): 
    4628 File
    4629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4630 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4631 if not self.draw_new_frame(): 
    4632 File
    4633 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4634 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4635 surface.update_clip_caps(view) 
    4636 File
    4637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4638 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4639 p.update_direction(cpos) 
    4640 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4641  
    4642 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4643  
    4644 File
    4645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4646 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4647 p.update_direction(cpos) 
    4648  
    4649 See log for complete Python traceback. 
    4650  
    4651 Traceback (most recent call last): 
    4652 File
    4653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4654 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4655 if not self.draw_new_frame(): 
    4656 File
    4657 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4658 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4659 surface.update_clip_caps(view) 
    4660 File
    4661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4662 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4663 p.update_direction(cpos) 
    4664 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4665  
    4666 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4667  
    4668 File
    4669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4670 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4671 p.update_direction(cpos) 
    4672  
    4673 See log for complete Python traceback. 
    4674  
    4675 Traceback (most recent call last): 
    4676 File
    4677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4678 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4679 if not self.draw_new_frame(): 
    4680 File
    4681 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4682 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4683 surface.update_clip_caps(view) 
    4684 File
    4685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4686 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4687 p.update_direction(cpos) 
    4688 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4689  
    4690 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4691  
    4692 File
    4693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4694 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4695 p.update_direction(cpos) 
    4696  
    4697 See log for complete Python traceback. 
    4698  
    4699 Traceback (most recent call last): 
    4700 File
    4701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4702 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4703 if not self.draw_new_frame(): 
    4704 File
    4705 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4706 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4707 surface.update_clip_caps(view) 
    4708 File
    4709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4710 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4711 p.update_direction(cpos) 
    4712 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4713  
    4714 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4715  
    4716 File
    4717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4718 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4719 p.update_direction(cpos) 
    4720  
    4721 See log for complete Python traceback. 
    4722  
    4723 Traceback (most recent call last): 
    4724 File
    4725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4726 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4727 if not self.draw_new_frame(): 
    4728 File
    4729 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4730 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4731 surface.update_clip_caps(view) 
    4732 File
    4733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4734 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4735 p.update_direction(cpos) 
    4736 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4737  
    4738 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4739  
    4740 File
    4741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4742 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4743 p.update_direction(cpos) 
    4744  
    4745 See log for complete Python traceback. 
    4746  
    4747 Traceback (most recent call last): 
    4748 File
    4749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4750 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4751 if not self.draw_new_frame(): 
    4752 File
    4753 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4754 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4755 surface.update_clip_caps(view) 
    4756 File
    4757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4758 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4759 p.update_direction(cpos) 
    4760 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4761  
    4762 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4763  
    4764 File
    4765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4766 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4767 p.update_direction(cpos) 
    4768  
    4769 See log for complete Python traceback. 
    4770  
    4771 Traceback (most recent call last): 
    4772 File
    4773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4774 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4775 if not self.draw_new_frame(): 
    4776 File
    4777 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4778 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4779 surface.update_clip_caps(view) 
    4780 File
    4781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4782 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4783 p.update_direction(cpos) 
    4784 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4785  
    4786 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4787  
    4788 File
    4789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4790 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4791 p.update_direction(cpos) 
    4792  
    4793 See log for complete Python traceback. 
    4794  
    4795 Traceback (most recent call last): 
    4796 File
    4797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4798 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4799 if not self.draw_new_frame(): 
    4800 File
    4801 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4802 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4803 surface.update_clip_caps(view) 
    4804 File
    4805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4806 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4807 p.update_direction(cpos) 
    4808 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4809  
    4810 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4811  
    4812 File
    4813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4814 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4815 p.update_direction(cpos) 
    4816  
    4817 See log for complete Python traceback. 
    4818  
    4819 Traceback (most recent call last): 
    4820 File
    4821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4822 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4823 if not self.draw_new_frame(): 
    4824 File
    4825 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4826 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4827 surface.update_clip_caps(view) 
    4828 File
    4829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4830 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4831 p.update_direction(cpos) 
    4832 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4833  
    4834 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4835  
    4836 File
    4837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4838 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4839 p.update_direction(cpos) 
    4840  
    4841 See log for complete Python traceback. 
    4842  
    4843 Traceback (most recent call last): 
    4844 File
    4845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4846 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4847 if not self.draw_new_frame(): 
    4848 File
    4849 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4850 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4851 surface.update_clip_caps(view) 
    4852 File
    4853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4854 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4855 p.update_direction(cpos) 
    4856 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4857  
    4858 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4859  
    4860 File
    4861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4862 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4863 p.update_direction(cpos) 
    4864  
    4865 See log for complete Python traceback. 
    4866  
    4867 Traceback (most recent call last): 
    4868 File
    4869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4870 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4871 if not self.draw_new_frame(): 
    4872 File
    4873 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4874 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4875 surface.update_clip_caps(view) 
    4876 File
    4877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4878 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4879 p.update_direction(cpos) 
    4880 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4881  
    4882 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4883  
    4884 File
    4885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4886 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4887 p.update_direction(cpos) 
    4888  
    4889 See log for complete Python traceback. 
    4890  
    4891 Traceback (most recent call last): 
    4892 File
    4893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4894 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4895 if not self.draw_new_frame(): 
    4896 File
    4897 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4898 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4899 surface.update_clip_caps(view) 
    4900 File
    4901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4902 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4903 p.update_direction(cpos) 
    4904 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4905  
    4906 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4907  
    4908 File
    4909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4910 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4911 p.update_direction(cpos) 
    4912  
    4913 See log for complete Python traceback. 
    4914  
    4915 Traceback (most recent call last): 
    4916 File
    4917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4918 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4919 if not self.draw_new_frame(): 
    4920 File
    4921 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4922 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4923 surface.update_clip_caps(view) 
    4924 File
    4925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4926 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4927 p.update_direction(cpos) 
    4928 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4929  
    4930 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4931  
    4932 File
    4933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4934 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4935 p.update_direction(cpos) 
    4936  
    4937 See log for complete Python traceback. 
    4938  
    4939 Traceback (most recent call last): 
    4940 File
    4941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4942 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4943 if not self.draw_new_frame(): 
    4944 File
    4945 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4946 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4947 surface.update_clip_caps(view) 
    4948 File
    4949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4950 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4951 p.update_direction(cpos) 
    4952 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4953  
    4954 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4955  
    4956 File
    4957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4958 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4959 p.update_direction(cpos) 
    4960  
    4961 See log for complete Python traceback. 
    4962  
    4963 Traceback (most recent call last): 
    4964 File
    4965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4966 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4967 if not self.draw_new_frame(): 
    4968 File
    4969 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4970 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4971 surface.update_clip_caps(view) 
    4972 File
    4973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4974 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4975 p.update_direction(cpos) 
    4976 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4977  
    4978 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    4979  
    4980 File
    4981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4982 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4983 p.update_direction(cpos) 
    4984  
    4985 See log for complete Python traceback. 
    4986  
    4987 Traceback (most recent call last): 
    4988 File
    4989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4990 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    4991 if not self.draw_new_frame(): 
    4992 File
    4993 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4994 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    4995 surface.update_clip_caps(view) 
    4996 File
    4997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    4998 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    4999 p.update_direction(cpos) 
    5000 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5001  
    5002 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5003  
    5004 File
    5005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5006 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5007 p.update_direction(cpos) 
    5008  
    5009 See log for complete Python traceback. 
    5010  
    5011 Traceback (most recent call last): 
    5012 File
    5013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5014 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5015 if not self.draw_new_frame(): 
    5016 File
    5017 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5018 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5019 surface.update_clip_caps(view) 
    5020 File
    5021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5022 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5023 p.update_direction(cpos) 
    5024 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5025  
    5026 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5027  
    5028 File
    5029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5030 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5031 p.update_direction(cpos) 
    5032  
    5033 See log for complete Python traceback. 
    5034  
    5035 Traceback (most recent call last): 
    5036 File
    5037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5038 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5039 if not self.draw_new_frame(): 
    5040 File
    5041 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5042 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5043 surface.update_clip_caps(view) 
    5044 File
    5045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5046 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5047 p.update_direction(cpos) 
    5048 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5049  
    5050 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5051  
    5052 File
    5053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5054 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5055 p.update_direction(cpos) 
    5056  
    5057 See log for complete Python traceback. 
    5058  
    5059 Traceback (most recent call last): 
    5060 File
    5061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5062 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5063 if not self.draw_new_frame(): 
    5064 File
    5065 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5066 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5067 surface.update_clip_caps(view) 
    5068 File
    5069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5070 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5071 p.update_direction(cpos) 
    5072 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5073  
    5074 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5075  
    5076 File
    5077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5078 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5079 p.update_direction(cpos) 
    5080  
    5081 See log for complete Python traceback. 
    5082  
    5083 Traceback (most recent call last): 
    5084 File
    5085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5086 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5087 if not self.draw_new_frame(): 
    5088 File
    5089 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5090 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5091 surface.update_clip_caps(view) 
    5092 File
    5093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5094 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5095 p.update_direction(cpos) 
    5096 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5097  
    5098 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5099  
    5100 File
    5101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5102 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5103 p.update_direction(cpos) 
    5104  
    5105 See log for complete Python traceback. 
    5106  
    5107 Traceback (most recent call last): 
    5108 File
    5109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5110 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5111 if not self.draw_new_frame(): 
    5112 File
    5113 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5114 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5115 surface.update_clip_caps(view) 
    5116 File
    5117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5118 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5119 p.update_direction(cpos) 
    5120 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5121  
    5122 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5123  
    5124 File
    5125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5126 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5127 p.update_direction(cpos) 
    5128  
    5129 See log for complete Python traceback. 
    5130  
    5131 Traceback (most recent call last): 
    5132 File
    5133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5134 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5135 if not self.draw_new_frame(): 
    5136 File
    5137 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5138 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5139 surface.update_clip_caps(view) 
    5140 File
    5141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5142 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5143 p.update_direction(cpos) 
    5144 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5145  
    5146 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5147  
    5148 File
    5149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5150 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5151 p.update_direction(cpos) 
    5152  
    5153 See log for complete Python traceback. 
    5154  
    5155 Traceback (most recent call last): 
    5156 File
    5157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5158 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5159 if not self.draw_new_frame(): 
    5160 File
    5161 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5162 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5163 surface.update_clip_caps(view) 
    5164 File
    5165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5166 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5167 p.update_direction(cpos) 
    5168 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5169  
    5170 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5171  
    5172 File
    5173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5174 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5175 p.update_direction(cpos) 
    5176  
    5177 See log for complete Python traceback. 
    5178  
    5179 Traceback (most recent call last): 
    5180 File
    5181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5182 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5183 if not self.draw_new_frame(): 
    5184 File
    5185 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5186 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5187 surface.update_clip_caps(view) 
    5188 File
    5189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5190 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5191 p.update_direction(cpos) 
    5192 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5193  
    5194 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5195  
    5196 File
    5197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5198 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5199 p.update_direction(cpos) 
    5200  
    5201 See log for complete Python traceback. 
    5202  
    5203 Traceback (most recent call last): 
    5204 File
    5205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5206 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5207 if not self.draw_new_frame(): 
    5208 File
    5209 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5210 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5211 surface.update_clip_caps(view) 
    5212 File
    5213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5214 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5215 p.update_direction(cpos) 
    5216 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5217  
    5218 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5219  
    5220 File
    5221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5222 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5223 p.update_direction(cpos) 
    5224  
    5225 See log for complete Python traceback. 
    5226  
    5227 Traceback (most recent call last): 
    5228 File
    5229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5230 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5231 if not self.draw_new_frame(): 
    5232 File
    5233 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5234 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5235 surface.update_clip_caps(view) 
    5236 File
    5237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5238 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5239 p.update_direction(cpos) 
    5240 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5241  
    5242 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5243  
    5244 File
    5245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5246 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5247 p.update_direction(cpos) 
    5248  
    5249 See log for complete Python traceback. 
    5250  
    5251 Traceback (most recent call last): 
    5252 File
    5253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5254 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5255 if not self.draw_new_frame(): 
    5256 File
    5257 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5258 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5259 surface.update_clip_caps(view) 
    5260 File
    5261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5262 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5263 p.update_direction(cpos) 
    5264 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5265  
    5266 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5267  
    5268 File
    5269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5270 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5271 p.update_direction(cpos) 
    5272  
    5273 See log for complete Python traceback. 
    5274  
    5275 Traceback (most recent call last): 
    5276 File
    5277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5278 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5279 if not self.draw_new_frame(): 
    5280 File
    5281 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5282 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5283 surface.update_clip_caps(view) 
    5284 File
    5285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5286 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5287 p.update_direction(cpos) 
    5288 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5289  
    5290 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5291  
    5292 File
    5293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5294 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5295 p.update_direction(cpos) 
    5296  
    5297 See log for complete Python traceback. 
    5298  
    5299 Traceback (most recent call last): 
    5300 File
    5301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5302 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5303 if not self.draw_new_frame(): 
    5304 File
    5305 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5306 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5307 surface.update_clip_caps(view) 
    5308 File
    5309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5310 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5311 p.update_direction(cpos) 
    5312 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5313  
    5314 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5315  
    5316 File
    5317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5318 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5319 p.update_direction(cpos) 
    5320  
    5321 See log for complete Python traceback. 
    5322  
    5323 Traceback (most recent call last): 
    5324 File
    5325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5326 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5327 if not self.draw_new_frame(): 
    5328 File
    5329 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5330 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5331 surface.update_clip_caps(view) 
    5332 File
    5333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5334 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5335 p.update_direction(cpos) 
    5336 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5337  
    5338 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5339  
    5340 File
    5341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5342 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5343 p.update_direction(cpos) 
    5344  
    5345 See log for complete Python traceback. 
    5346  
    5347 Traceback (most recent call last): 
    5348 File
    5349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5350 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5351 if not self.draw_new_frame(): 
    5352 File
    5353 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5354 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5355 surface.update_clip_caps(view) 
    5356 File
    5357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5358 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5359 p.update_direction(cpos) 
    5360 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5361  
    5362 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5363  
    5364 File
    5365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5366 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5367 p.update_direction(cpos) 
    5368  
    5369 See log for complete Python traceback. 
    5370  
    5371 Traceback (most recent call last): 
    5372 File
    5373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5374 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5375 if not self.draw_new_frame(): 
    5376 File
    5377 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5378 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5379 surface.update_clip_caps(view) 
    5380 File
    5381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5382 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5383 p.update_direction(cpos) 
    5384 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5385  
    5386 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5387  
    5388 File
    5389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5390 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5391 p.update_direction(cpos) 
    5392  
    5393 See log for complete Python traceback. 
    5394  
    5395 Traceback (most recent call last): 
    5396 File
    5397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5398 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5399 if not self.draw_new_frame(): 
    5400 File
    5401 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5402 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5403 surface.update_clip_caps(view) 
    5404 File
    5405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5406 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5407 p.update_direction(cpos) 
    5408 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5409  
    5410 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5411  
    5412 File
    5413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5414 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5415 p.update_direction(cpos) 
    5416  
    5417 See log for complete Python traceback. 
    5418  
    5419 Traceback (most recent call last): 
    5420 File
    5421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5422 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5423 if not self.draw_new_frame(): 
    5424 File
    5425 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5426 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5427 surface.update_clip_caps(view) 
    5428 File
    5429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5430 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5431 p.update_direction(cpos) 
    5432 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5433  
    5434 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5435  
    5436 File
    5437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5438 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5439 p.update_direction(cpos) 
    5440  
    5441 See log for complete Python traceback. 
    5442  
    5443 Traceback (most recent call last): 
    5444 File
    5445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5446 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5447 if not self.draw_new_frame(): 
    5448 File
    5449 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5450 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5451 surface.update_clip_caps(view) 
    5452 File
    5453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5454 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5455 p.update_direction(cpos) 
    5456 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5457  
    5458 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5459  
    5460 File
    5461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5462 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5463 p.update_direction(cpos) 
    5464  
    5465 See log for complete Python traceback. 
    5466  
    5467 Traceback (most recent call last): 
    5468 File
    5469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5470 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5471 if not self.draw_new_frame(): 
    5472 File
    5473 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5474 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5475 surface.update_clip_caps(view) 
    5476 File
    5477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5478 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5479 p.update_direction(cpos) 
    5480 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5481  
    5482 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5483  
    5484 File
    5485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5486 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5487 p.update_direction(cpos) 
    5488  
    5489 See log for complete Python traceback. 
    5490  
    5491 Traceback (most recent call last): 
    5492 File
    5493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5494 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5495 if not self.draw_new_frame(): 
    5496 File
    5497 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5498 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5499 surface.update_clip_caps(view) 
    5500 File
    5501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5502 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5503 p.update_direction(cpos) 
    5504 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5505  
    5506 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5507  
    5508 File
    5509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5510 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5511 p.update_direction(cpos) 
    5512  
    5513 See log for complete Python traceback. 
    5514  
    5515 Traceback (most recent call last): 
    5516 File
    5517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5518 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5519 if not self.draw_new_frame(): 
    5520 File
    5521 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5522 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5523 surface.update_clip_caps(view) 
    5524 File
    5525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5526 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5527 p.update_direction(cpos) 
    5528 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5529  
    5530 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5531  
    5532 File
    5533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5534 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5535 p.update_direction(cpos) 
    5536  
    5537 See log for complete Python traceback. 
    5538  
    5539 Traceback (most recent call last): 
    5540 File
    5541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5542 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5543 if not self.draw_new_frame(): 
    5544 File
    5545 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5546 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5547 surface.update_clip_caps(view) 
    5548 File
    5549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5550 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5551 p.update_direction(cpos) 
    5552 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5553  
    5554 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5555  
    5556 File
    5557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5558 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5559 p.update_direction(cpos) 
    5560  
    5561 See log for complete Python traceback. 
    5562  
    5563 Traceback (most recent call last): 
    5564 File
    5565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5566 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5567 if not self.draw_new_frame(): 
    5568 File
    5569 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5570 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5571 surface.update_clip_caps(view) 
    5572 File
    5573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5574 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5575 p.update_direction(cpos) 
    5576 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5577  
    5578 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5579  
    5580 File
    5581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5582 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5583 p.update_direction(cpos) 
    5584  
    5585 See log for complete Python traceback. 
    5586  
    5587 Traceback (most recent call last): 
    5588 File
    5589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5590 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5591 if not self.draw_new_frame(): 
    5592 File
    5593 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5594 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5595 surface.update_clip_caps(view) 
    5596 File
    5597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5598 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5599 p.update_direction(cpos) 
    5600 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5601  
    5602 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5603  
    5604 File
    5605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5606 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5607 p.update_direction(cpos) 
    5608  
    5609 See log for complete Python traceback. 
    5610  
    5611 Traceback (most recent call last): 
    5612 File
    5613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5614 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5615 if not self.draw_new_frame(): 
    5616 File
    5617 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5618 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5619 surface.update_clip_caps(view) 
    5620 File
    5621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5622 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5623 p.update_direction(cpos) 
    5624 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5625  
    5626 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5627  
    5628 File
    5629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5630 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5631 p.update_direction(cpos) 
    5632  
    5633 See log for complete Python traceback. 
    5634  
    5635 Traceback (most recent call last): 
    5636 File
    5637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5638 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5639 if not self.draw_new_frame(): 
    5640 File
    5641 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5642 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5643 surface.update_clip_caps(view) 
    5644 File
    5645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5646 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5647 p.update_direction(cpos) 
    5648 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5649  
    5650 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5651  
    5652 File
    5653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5654 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5655 p.update_direction(cpos) 
    5656  
    5657 See log for complete Python traceback. 
    5658  
    5659 Traceback (most recent call last): 
    5660 File
    5661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5662 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5663 if not self.draw_new_frame(): 
    5664 File
    5665 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5666 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5667 surface.update_clip_caps(view) 
    5668 File
    5669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5670 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5671 p.update_direction(cpos) 
    5672 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5673  
    5674 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5675  
    5676 File
    5677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5678 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5679 p.update_direction(cpos) 
    5680  
    5681 See log for complete Python traceback. 
    5682  
    5683 Traceback (most recent call last): 
    5684 File
    5685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5686 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5687 if not self.draw_new_frame(): 
    5688 File
    5689 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5690 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5691 surface.update_clip_caps(view) 
    5692 File
    5693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5694 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5695 p.update_direction(cpos) 
    5696 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5697  
    5698 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5699  
    5700 File
    5701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5702 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5703 p.update_direction(cpos) 
    5704  
    5705 See log for complete Python traceback. 
    5706  
    5707 Traceback (most recent call last): 
    5708 File
    5709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5710 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5711 if not self.draw_new_frame(): 
    5712 File
    5713 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5714 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5715 surface.update_clip_caps(view) 
    5716 File
    5717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5718 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5719 p.update_direction(cpos) 
    5720 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5721  
    5722 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5723  
    5724 File
    5725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5726 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5727 p.update_direction(cpos) 
    5728  
    5729 See log for complete Python traceback. 
    5730  
    5731 Traceback (most recent call last): 
    5732 File
    5733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5734 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5735 if not self.draw_new_frame(): 
    5736 File
    5737 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5738 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5739 surface.update_clip_caps(view) 
    5740 File
    5741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5742 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5743 p.update_direction(cpos) 
    5744 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5745  
    5746 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5747  
    5748 File
    5749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5750 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5751 p.update_direction(cpos) 
    5752  
    5753 See log for complete Python traceback. 
    5754  
    5755 Traceback (most recent call last): 
    5756 File
    5757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5758 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5759 if not self.draw_new_frame(): 
    5760 File
    5761 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5762 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5763 surface.update_clip_caps(view) 
    5764 File
    5765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5766 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5767 p.update_direction(cpos) 
    5768 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5769  
    5770 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5771  
    5772 File
    5773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5774 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5775 p.update_direction(cpos) 
    5776  
    5777 See log for complete Python traceback. 
    5778  
    5779 Traceback (most recent call last): 
    5780 File
    5781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5782 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5783 if not self.draw_new_frame(): 
    5784 File
    5785 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5786 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5787 surface.update_clip_caps(view) 
    5788 File
    5789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5790 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5791 p.update_direction(cpos) 
    5792 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5793  
    5794 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5795  
    5796 File
    5797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5798 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5799 p.update_direction(cpos) 
    5800  
    5801 See log for complete Python traceback. 
    5802  
    5803 Traceback (most recent call last): 
    5804 File
    5805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5806 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5807 if not self.draw_new_frame(): 
    5808 File
    5809 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5810 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5811 surface.update_clip_caps(view) 
    5812 File
    5813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5814 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5815 p.update_direction(cpos) 
    5816 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5817  
    5818 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5819  
    5820 File
    5821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5822 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5823 p.update_direction(cpos) 
    5824  
    5825 See log for complete Python traceback. 
    5826  
    5827 Traceback (most recent call last): 
    5828 File
    5829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5830 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5831 if not self.draw_new_frame(): 
    5832 File
    5833 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5834 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5835 surface.update_clip_caps(view) 
    5836 File
    5837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5838 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5839 p.update_direction(cpos) 
    5840 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5841  
    5842 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5843  
    5844 File
    5845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5846 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5847 p.update_direction(cpos) 
    5848  
    5849 See log for complete Python traceback. 
    5850  
    5851 Traceback (most recent call last): 
    5852 File
    5853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5854 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5855 if not self.draw_new_frame(): 
    5856 File
    5857 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5858 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5859 surface.update_clip_caps(view) 
    5860 File
    5861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5862 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5863 p.update_direction(cpos) 
    5864 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5865  
    5866 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5867  
    5868 File
    5869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5870 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5871 p.update_direction(cpos) 
    5872  
    5873 See log for complete Python traceback. 
    5874  
    5875 Traceback (most recent call last): 
    5876 File
    5877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5878 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5879 if not self.draw_new_frame(): 
    5880 File
    5881 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5882 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5883 surface.update_clip_caps(view) 
    5884 File
    5885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5886 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5887 p.update_direction(cpos) 
    5888 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5889  
    5890 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5891  
    5892 File
    5893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5894 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5895 p.update_direction(cpos) 
    5896  
    5897 See log for complete Python traceback. 
    5898  
    5899 Traceback (most recent call last): 
    5900 File
    5901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5902 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5903 if not self.draw_new_frame(): 
    5904 File
    5905 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5906 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5907 surface.update_clip_caps(view) 
    5908 File
    5909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5910 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5911 p.update_direction(cpos) 
    5912 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5913  
    5914 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5915  
    5916 File
    5917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5918 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5919 p.update_direction(cpos) 
    5920  
    5921 See log for complete Python traceback. 
    5922  
    5923 Traceback (most recent call last): 
    5924 File
    5925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5926 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5927 if not self.draw_new_frame(): 
    5928 File
    5929 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5930 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5931 surface.update_clip_caps(view) 
    5932 File
    5933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5934 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5935 p.update_direction(cpos) 
    5936 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5937  
    5938 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5939  
    5940 File
    5941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5942 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5943 p.update_direction(cpos) 
    5944  
    5945 See log for complete Python traceback. 
    5946  
    5947 Traceback (most recent call last): 
    5948 File
    5949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5950 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5951 if not self.draw_new_frame(): 
    5952 File
    5953 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5954 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5955 surface.update_clip_caps(view) 
    5956 File
    5957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5958 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5959 p.update_direction(cpos) 
    5960 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5961  
    5962 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5963  
    5964 File
    5965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5966 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5967 p.update_direction(cpos) 
    5968  
    5969 See log for complete Python traceback. 
    5970  
    5971 Traceback (most recent call last): 
    5972 File
    5973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5974 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5975 if not self.draw_new_frame(): 
    5976 File
    5977 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5978 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    5979 surface.update_clip_caps(view) 
    5980 File
    5981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5982 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5983 p.update_direction(cpos) 
    5984 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5985  
    5986 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    5987  
    5988 File
    5989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5990 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    5991 p.update_direction(cpos) 
    5992  
    5993 See log for complete Python traceback. 
    5994  
    5995 Traceback (most recent call last): 
    5996 File
    5997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    5998 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    5999 if not self.draw_new_frame(): 
    6000 File
    6001 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6002 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6003 surface.update_clip_caps(view) 
    6004 File
    6005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6006 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6007 p.update_direction(cpos) 
    6008 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6009  
    6010 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6011  
    6012 File
    6013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6014 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6015 p.update_direction(cpos) 
    6016  
    6017 See log for complete Python traceback. 
    6018  
    6019 Traceback (most recent call last): 
    6020 File
    6021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6022 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6023 if not self.draw_new_frame(): 
    6024 File
    6025 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6026 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6027 surface.update_clip_caps(view) 
    6028 File
    6029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6030 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6031 p.update_direction(cpos) 
    6032 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6033  
    6034 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6035  
    6036 File
    6037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6038 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6039 p.update_direction(cpos) 
    6040  
    6041 See log for complete Python traceback. 
    6042  
    6043 Traceback (most recent call last): 
    6044 File
    6045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6046 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6047 if not self.draw_new_frame(): 
    6048 File
    6049 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6050 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6051 surface.update_clip_caps(view) 
    6052 File
    6053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6054 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6055 p.update_direction(cpos) 
    6056 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6057  
    6058 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6059  
    6060 File
    6061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6062 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6063 p.update_direction(cpos) 
    6064  
    6065 See log for complete Python traceback. 
    6066  
    6067 Traceback (most recent call last): 
    6068 File
    6069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6070 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6071 if not self.draw_new_frame(): 
    6072 File
    6073 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6074 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6075 surface.update_clip_caps(view) 
    6076 File
    6077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6078 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6079 p.update_direction(cpos) 
    6080 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6081  
    6082 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6083  
    6084 File
    6085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6086 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6087 p.update_direction(cpos) 
    6088  
    6089 See log for complete Python traceback. 
    6090  
    6091 Traceback (most recent call last): 
    6092 File
    6093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6094 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6095 if not self.draw_new_frame(): 
    6096 File
    6097 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6098 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6099 surface.update_clip_caps(view) 
    6100 File
    6101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6102 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6103 p.update_direction(cpos) 
    6104 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6105  
    6106 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6107  
    6108 File
    6109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6110 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6111 p.update_direction(cpos) 
    6112  
    6113 See log for complete Python traceback. 
    6114  
    6115 Traceback (most recent call last): 
    6116 File
    6117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6118 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6119 if not self.draw_new_frame(): 
    6120 File
    6121 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6122 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6123 surface.update_clip_caps(view) 
    6124 File
    6125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6126 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6127 p.update_direction(cpos) 
    6128 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6129  
    6130 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6131  
    6132 File
    6133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6134 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6135 p.update_direction(cpos) 
    6136  
    6137 See log for complete Python traceback. 
    6138  
    6139 Traceback (most recent call last): 
    6140 File
    6141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6142 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6143 if not self.draw_new_frame(): 
    6144 File
    6145 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6146 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6147 surface.update_clip_caps(view) 
    6148 File
    6149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6150 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6151 p.update_direction(cpos) 
    6152 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6153  
    6154 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6155  
    6156 File
    6157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6158 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6159 p.update_direction(cpos) 
    6160  
    6161 See log for complete Python traceback. 
    6162  
    6163 Traceback (most recent call last): 
    6164 File
    6165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6166 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6167 if not self.draw_new_frame(): 
    6168 File
    6169 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6170 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6171 surface.update_clip_caps(view) 
    6172 File
    6173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6174 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6175 p.update_direction(cpos) 
    6176 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6177  
    6178 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6179  
    6180 File
    6181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6182 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6183 p.update_direction(cpos) 
    6184  
    6185 See log for complete Python traceback. 
    6186  
    6187 Traceback (most recent call last): 
    6188 File
    6189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6190 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6191 if not self.draw_new_frame(): 
    6192 File
    6193 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6194 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6195 surface.update_clip_caps(view) 
    6196 File
    6197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6198 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6199 p.update_direction(cpos) 
    6200 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6201  
    6202 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6203  
    6204 File
    6205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6206 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6207 p.update_direction(cpos) 
    6208  
    6209 See log for complete Python traceback. 
    6210  
    6211 Traceback (most recent call last): 
    6212 File
    6213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6214 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6215 if not self.draw_new_frame(): 
    6216 File
    6217 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6218 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6219 surface.update_clip_caps(view) 
    6220 File
    6221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6222 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6223 p.update_direction(cpos) 
    6224 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6225  
    6226 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6227  
    6228 File
    6229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6230 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6231 p.update_direction(cpos) 
    6232  
    6233 See log for complete Python traceback. 
    6234  
    6235 Traceback (most recent call last): 
    6236 File
    6237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6238 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6239 if not self.draw_new_frame(): 
    6240 File
    6241 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6242 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6243 surface.update_clip_caps(view) 
    6244 File
    6245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6246 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6247 p.update_direction(cpos) 
    6248 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6249  
    6250 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6251  
    6252 File
    6253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6254 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6255 p.update_direction(cpos) 
    6256  
    6257 See log for complete Python traceback. 
    6258  
    6259 Traceback (most recent call last): 
    6260 File
    6261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6262 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6263 if not self.draw_new_frame(): 
    6264 File
    6265 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6266 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6267 surface.update_clip_caps(view) 
    6268 File
    6269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6270 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6271 p.update_direction(cpos) 
    6272 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6273  
    6274 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6275  
    6276 File
    6277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6278 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6279 p.update_direction(cpos) 
    6280  
    6281 See log for complete Python traceback. 
    6282  
    6283 Traceback (most recent call last): 
    6284 File
    6285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6286 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6287 if not self.draw_new_frame(): 
    6288 File
    6289 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6290 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6291 surface.update_clip_caps(view) 
    6292 File
    6293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6294 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6295 p.update_direction(cpos) 
    6296 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6297  
    6298 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6299  
    6300 File
    6301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6302 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6303 p.update_direction(cpos) 
    6304  
    6305 See log for complete Python traceback. 
    6306  
    6307 Traceback (most recent call last): 
    6308 File
    6309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6310 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6311 if not self.draw_new_frame(): 
    6312 File
    6313 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6314 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6315 surface.update_clip_caps(view) 
    6316 File
    6317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6318 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6319 p.update_direction(cpos) 
    6320 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6321  
    6322 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6323  
    6324 File
    6325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6326 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6327 p.update_direction(cpos) 
    6328  
    6329 See log for complete Python traceback. 
    6330  
    6331 Traceback (most recent call last): 
    6332 File
    6333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6334 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6335 if not self.draw_new_frame(): 
    6336 File
    6337 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6338 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6339 surface.update_clip_caps(view) 
    6340 File
    6341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6342 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6343 p.update_direction(cpos) 
    6344 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6345  
    6346 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6347  
    6348 File
    6349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6350 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6351 p.update_direction(cpos) 
    6352  
    6353 See log for complete Python traceback. 
    6354  
    6355 Traceback (most recent call last): 
    6356 File
    6357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6358 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6359 if not self.draw_new_frame(): 
    6360 File
    6361 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6362 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6363 surface.update_clip_caps(view) 
    6364 File
    6365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6366 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6367 p.update_direction(cpos) 
    6368 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6369  
    6370 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6371  
    6372 File
    6373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6374 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6375 p.update_direction(cpos) 
    6376  
    6377 See log for complete Python traceback. 
    6378  
    6379 Traceback (most recent call last): 
    6380 File
    6381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6382 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6383 if not self.draw_new_frame(): 
    6384 File
    6385 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6386 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6387 surface.update_clip_caps(view) 
    6388 File
    6389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6390 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6391 p.update_direction(cpos) 
    6392 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6393  
    6394 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6395  
    6396 File
    6397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6398 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6399 p.update_direction(cpos) 
    6400  
    6401 See log for complete Python traceback. 
    6402  
    6403 Traceback (most recent call last): 
    6404 File
    6405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6406 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6407 if not self.draw_new_frame(): 
    6408 File
    6409 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6410 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6411 surface.update_clip_caps(view) 
    6412 File
    6413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6414 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6415 p.update_direction(cpos) 
    6416 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6417  
    6418 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6419  
    6420 File
    6421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6422 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6423 p.update_direction(cpos) 
    6424  
    6425 See log for complete Python traceback. 
    6426  
    6427 Traceback (most recent call last): 
    6428 File
    6429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6430 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6431 if not self.draw_new_frame(): 
    6432 File
    6433 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6434 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6435 surface.update_clip_caps(view) 
    6436 File
    6437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6438 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6439 p.update_direction(cpos) 
    6440 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6441  
    6442 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6443  
    6444 File
    6445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6446 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6447 p.update_direction(cpos) 
    6448  
    6449 See log for complete Python traceback. 
    6450  
    6451 Traceback (most recent call last): 
    6452 File
    6453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6454 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6455 if not self.draw_new_frame(): 
    6456 File
    6457 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6458 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6459 surface.update_clip_caps(view) 
    6460 File
    6461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6462 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6463 p.update_direction(cpos) 
    6464 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6465  
    6466 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6467  
    6468 File
    6469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6470 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6471 p.update_direction(cpos) 
    6472  
    6473 See log for complete Python traceback. 
    6474  
    6475 Traceback (most recent call last): 
    6476 File
    6477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6478 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6479 if not self.draw_new_frame(): 
    6480 File
    6481 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6482 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6483 surface.update_clip_caps(view) 
    6484 File
    6485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6486 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6487 p.update_direction(cpos) 
    6488 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6489  
    6490 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6491  
    6492 File
    6493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6494 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6495 p.update_direction(cpos) 
    6496  
    6497 See log for complete Python traceback. 
    6498  
    6499 Traceback (most recent call last): 
    6500 File
    6501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6502 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6503 if not self.draw_new_frame(): 
    6504 File
    6505 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6506 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6507 surface.update_clip_caps(view) 
    6508 File
    6509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6510 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6511 p.update_direction(cpos) 
    6512 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6513  
    6514 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6515  
    6516 File
    6517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6518 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6519 p.update_direction(cpos) 
    6520  
    6521 See log for complete Python traceback. 
    6522  
    6523 Traceback (most recent call last): 
    6524 File
    6525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6526 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6527 if not self.draw_new_frame(): 
    6528 File
    6529 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6530 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6531 surface.update_clip_caps(view) 
    6532 File
    6533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6534 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6535 p.update_direction(cpos) 
    6536 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6537  
    6538 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6539  
    6540 File
    6541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6542 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6543 p.update_direction(cpos) 
    6544  
    6545 See log for complete Python traceback. 
    6546  
    6547 Traceback (most recent call last): 
    6548 File
    6549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6550 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6551 if not self.draw_new_frame(): 
    6552 File
    6553 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6554 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6555 surface.update_clip_caps(view) 
    6556 File
    6557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6558 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6559 p.update_direction(cpos) 
    6560 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6561  
    6562 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6563  
    6564 File
    6565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6566 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6567 p.update_direction(cpos) 
    6568  
    6569 See log for complete Python traceback. 
    6570  
    6571 Traceback (most recent call last): 
    6572 File
    6573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6574 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6575 if not self.draw_new_frame(): 
    6576 File
    6577 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6578 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6579 surface.update_clip_caps(view) 
    6580 File
    6581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6582 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6583 p.update_direction(cpos) 
    6584 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6585  
    6586 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6587  
    6588 File
    6589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6590 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6591 p.update_direction(cpos) 
    6592  
    6593 See log for complete Python traceback. 
    6594  
    6595 Traceback (most recent call last): 
    6596 File
    6597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6598 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6599 if not self.draw_new_frame(): 
    6600 File
    6601 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6602 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6603 surface.update_clip_caps(view) 
    6604 File
    6605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6606 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6607 p.update_direction(cpos) 
    6608 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6609  
    6610 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6611  
    6612 File
    6613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6614 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6615 p.update_direction(cpos) 
    6616  
    6617 See log for complete Python traceback. 
    6618  
    6619 Traceback (most recent call last): 
    6620 File
    6621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6622 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6623 if not self.draw_new_frame(): 
    6624 File
    6625 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6626 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6627 surface.update_clip_caps(view) 
    6628 File
    6629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6630 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6631 p.update_direction(cpos) 
    6632 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6633  
    6634 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6635  
    6636 File
    6637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6638 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6639 p.update_direction(cpos) 
    6640  
    6641 See log for complete Python traceback. 
    6642  
    6643 Traceback (most recent call last): 
    6644 File
    6645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6646 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6647 if not self.draw_new_frame(): 
    6648 File
    6649 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6650 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6651 surface.update_clip_caps(view) 
    6652 File
    6653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6654 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6655 p.update_direction(cpos) 
    6656 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6657  
    6658 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6659  
    6660 File
    6661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6662 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6663 p.update_direction(cpos) 
    6664  
    6665 See log for complete Python traceback. 
    6666  
    6667 Traceback (most recent call last): 
    6668 File
    6669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6670 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6671 if not self.draw_new_frame(): 
    6672 File
    6673 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6674 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6675 surface.update_clip_caps(view) 
    6676 File
    6677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6678 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6679 p.update_direction(cpos) 
    6680 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6681  
    6682 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6683  
    6684 File
    6685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6686 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6687 p.update_direction(cpos) 
    6688  
    6689 See log for complete Python traceback. 
    6690  
    6691 Traceback (most recent call last): 
    6692 File
    6693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6694 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6695 if not self.draw_new_frame(): 
    6696 File
    6697 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6698 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6699 surface.update_clip_caps(view) 
    6700 File
    6701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6702 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6703 p.update_direction(cpos) 
    6704 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6705  
    6706 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6707  
    6708 File
    6709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6710 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6711 p.update_direction(cpos) 
    6712  
    6713 See log for complete Python traceback. 
    6714  
    6715 Traceback (most recent call last): 
    6716 File
    6717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6718 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6719 if not self.draw_new_frame(): 
    6720 File
    6721 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6722 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6723 surface.update_clip_caps(view) 
    6724 File
    6725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6726 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6727 p.update_direction(cpos) 
    6728 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6729  
    6730 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6731  
    6732 File
    6733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6734 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6735 p.update_direction(cpos) 
    6736  
    6737 See log for complete Python traceback. 
    6738  
    6739 Traceback (most recent call last): 
    6740 File
    6741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6742 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6743 if not self.draw_new_frame(): 
    6744 File
    6745 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6746 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6747 surface.update_clip_caps(view) 
    6748 File
    6749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6750 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6751 p.update_direction(cpos) 
    6752 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6753  
    6754 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6755  
    6756 File
    6757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6758 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6759 p.update_direction(cpos) 
    6760  
    6761 See log for complete Python traceback. 
    6762  
    6763 Traceback (most recent call last): 
    6764 File
    6765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6766 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6767 if not self.draw_new_frame(): 
    6768 File
    6769 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6770 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6771 surface.update_clip_caps(view) 
    6772 File
    6773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6774 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6775 p.update_direction(cpos) 
    6776 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6777  
    6778 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6779  
    6780 File
    6781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6782 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6783 p.update_direction(cpos) 
    6784  
    6785 See log for complete Python traceback. 
    6786  
    6787 Traceback (most recent call last): 
    6788 File
    6789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6790 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6791 if not self.draw_new_frame(): 
    6792 File
    6793 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6794 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6795 surface.update_clip_caps(view) 
    6796 File
    6797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6798 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6799 p.update_direction(cpos) 
    6800 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6801  
    6802 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6803  
    6804 File
    6805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6806 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6807 p.update_direction(cpos) 
    6808  
    6809 See log for complete Python traceback. 
    6810  
    6811 Traceback (most recent call last): 
    6812 File
    6813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6814 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6815 if not self.draw_new_frame(): 
    6816 File
    6817 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6818 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6819 surface.update_clip_caps(view) 
    6820 File
    6821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6822 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6823 p.update_direction(cpos) 
    6824 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6825  
    6826 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6827  
    6828 File
    6829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6830 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6831 p.update_direction(cpos) 
    6832  
    6833 See log for complete Python traceback. 
    6834  
    6835 Traceback (most recent call last): 
    6836 File
    6837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6838 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6839 if not self.draw_new_frame(): 
    6840 File
    6841 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6842 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6843 surface.update_clip_caps(view) 
    6844 File
    6845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6846 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6847 p.update_direction(cpos) 
    6848 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6849  
    6850 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6851  
    6852 File
    6853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6854 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6855 p.update_direction(cpos) 
    6856  
    6857 See log for complete Python traceback. 
    6858  
    6859 Traceback (most recent call last): 
    6860 File
    6861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6862 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6863 if not self.draw_new_frame(): 
    6864 File
    6865 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6866 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6867 surface.update_clip_caps(view) 
    6868 File
    6869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6870 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6871 p.update_direction(cpos) 
    6872 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6873  
    6874 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6875  
    6876 File
    6877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6878 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6879 p.update_direction(cpos) 
    6880  
    6881 See log for complete Python traceback. 
    6882  
    6883 Traceback (most recent call last): 
    6884 File
    6885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6886 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6887 if not self.draw_new_frame(): 
    6888 File
    6889 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6890 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6891 surface.update_clip_caps(view) 
    6892 File
    6893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6894 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6895 p.update_direction(cpos) 
    6896 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6897  
    6898 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6899  
    6900 File
    6901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6902 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6903 p.update_direction(cpos) 
    6904  
    6905 See log for complete Python traceback. 
    6906  
    6907 Traceback (most recent call last): 
    6908 File
    6909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6910 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6911 if not self.draw_new_frame(): 
    6912 File
    6913 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6914 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6915 surface.update_clip_caps(view) 
    6916 File
    6917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6918 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6919 p.update_direction(cpos) 
    6920 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6921  
    6922 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6923  
    6924 File
    6925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6926 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6927 p.update_direction(cpos) 
    6928  
    6929 See log for complete Python traceback. 
    6930  
    6931 Traceback (most recent call last): 
    6932 File
    6933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6934 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6935 if not self.draw_new_frame(): 
    6936 File
    6937 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6938 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6939 surface.update_clip_caps(view) 
    6940 File
    6941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6942 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6943 p.update_direction(cpos) 
    6944 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6945  
    6946 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6947  
    6948 File
    6949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6950 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6951 p.update_direction(cpos) 
    6952  
    6953 See log for complete Python traceback. 
    6954  
    6955 Traceback (most recent call last): 
    6956 File
    6957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6958 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6959 if not self.draw_new_frame(): 
    6960 File
    6961 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6962 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6963 surface.update_clip_caps(view) 
    6964 File
    6965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6966 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6967 p.update_direction(cpos) 
    6968 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6969  
    6970 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6971  
    6972 File
    6973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6974 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6975 p.update_direction(cpos) 
    6976  
    6977 See log for complete Python traceback. 
    6978  
    6979 Traceback (most recent call last): 
    6980 File
    6981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6982 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    6983 if not self.draw_new_frame(): 
    6984 File
    6985 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6986 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    6987 surface.update_clip_caps(view) 
    6988 File
    6989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6990 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6991 p.update_direction(cpos) 
    6992 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6993  
    6994 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    6995  
    6996 File
    6997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    6998 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    6999 p.update_direction(cpos) 
    7000  
    7001 See log for complete Python traceback. 
    7002  
    7003 Traceback (most recent call last): 
    7004 File
    7005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7006 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7007 if not self.draw_new_frame(): 
    7008 File
    7009 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7010 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7011 surface.update_clip_caps(view) 
    7012 File
    7013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7014 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7015 p.update_direction(cpos) 
    7016 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7017  
    7018 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7019  
    7020 File
    7021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7022 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7023 p.update_direction(cpos) 
    7024  
    7025 See log for complete Python traceback. 
    7026  
    7027 Traceback (most recent call last): 
    7028 File
    7029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7030 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7031 if not self.draw_new_frame(): 
    7032 File
    7033 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7034 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7035 surface.update_clip_caps(view) 
    7036 File
    7037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7038 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7039 p.update_direction(cpos) 
    7040 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7041  
    7042 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7043  
    7044 File
    7045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7046 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7047 p.update_direction(cpos) 
    7048  
    7049 See log for complete Python traceback. 
    7050  
    7051 Traceback (most recent call last): 
    7052 File
    7053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7054 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7055 if not self.draw_new_frame(): 
    7056 File
    7057 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7058 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7059 surface.update_clip_caps(view) 
    7060 File
    7061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7062 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7063 p.update_direction(cpos) 
    7064 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7065  
    7066 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7067  
    7068 File
    7069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7070 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7071 p.update_direction(cpos) 
    7072  
    7073 See log for complete Python traceback. 
    7074  
    7075 Traceback (most recent call last): 
    7076 File
    7077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7078 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7079 if not self.draw_new_frame(): 
    7080 File
    7081 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7082 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7083 surface.update_clip_caps(view) 
    7084 File
    7085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7086 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7087 p.update_direction(cpos) 
    7088 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7089  
    7090 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7091  
    7092 File
    7093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7094 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7095 p.update_direction(cpos) 
    7096  
    7097 See log for complete Python traceback. 
    7098  
    7099 Traceback (most recent call last): 
    7100 File
    7101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7102 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7103 if not self.draw_new_frame(): 
    7104 File
    7105 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7106 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7107 surface.update_clip_caps(view) 
    7108 File
    7109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7110 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7111 p.update_direction(cpos) 
    7112 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7113  
    7114 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7115  
    7116 File
    7117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7118 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7119 p.update_direction(cpos) 
    7120  
    7121 See log for complete Python traceback. 
    7122  
    7123 Traceback (most recent call last): 
    7124 File
    7125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7126 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7127 if not self.draw_new_frame(): 
    7128 File
    7129 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7130 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7131 surface.update_clip_caps(view) 
    7132 File
    7133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7134 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7135 p.update_direction(cpos) 
    7136 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7137  
    7138 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7139  
    7140 File
    7141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7142 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7143 p.update_direction(cpos) 
    7144  
    7145 See log for complete Python traceback. 
    7146  
    7147 Traceback (most recent call last): 
    7148 File
    7149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7150 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7151 if not self.draw_new_frame(): 
    7152 File
    7153 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7154 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7155 surface.update_clip_caps(view) 
    7156 File
    7157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7158 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7159 p.update_direction(cpos) 
    7160 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7161  
    7162 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7163  
    7164 File
    7165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7166 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7167 p.update_direction(cpos) 
    7168  
    7169 See log for complete Python traceback. 
    7170  
    7171 Traceback (most recent call last): 
    7172 File
    7173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7174 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7175 if not self.draw_new_frame(): 
    7176 File
    7177 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7178 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7179 surface.update_clip_caps(view) 
    7180 File
    7181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7182 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7183 p.update_direction(cpos) 
    7184 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7185  
    7186 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7187  
    7188 File
    7189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7190 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7191 p.update_direction(cpos) 
    7192  
    7193 See log for complete Python traceback. 
    7194  
    7195 Traceback (most recent call last): 
    7196 File
    7197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7198 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7199 if not self.draw_new_frame(): 
    7200 File
    7201 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7202 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7203 surface.update_clip_caps(view) 
    7204 File
    7205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7206 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7207 p.update_direction(cpos) 
    7208 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7209  
    7210 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7211  
    7212 File
    7213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7214 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7215 p.update_direction(cpos) 
    7216  
    7217 See log for complete Python traceback. 
    7218  
    7219 Traceback (most recent call last): 
    7220 File
    7221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7222 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7223 if not self.draw_new_frame(): 
    7224 File
    7225 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7226 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7227 surface.update_clip_caps(view) 
    7228 File
    7229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7230 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7231 p.update_direction(cpos) 
    7232 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7233  
    7234 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7235  
    7236 File
    7237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7238 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7239 p.update_direction(cpos) 
    7240  
    7241 See log for complete Python traceback. 
    7242  
    7243 Traceback (most recent call last): 
    7244 File
    7245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7246 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7247 if not self.draw_new_frame(): 
    7248 File
    7249 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7250 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7251 surface.update_clip_caps(view) 
    7252 File
    7253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7254 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7255 p.update_direction(cpos) 
    7256 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7257  
    7258 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7259  
    7260 File
    7261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7262 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7263 p.update_direction(cpos) 
    7264  
    7265 See log for complete Python traceback. 
    7266  
    7267 Traceback (most recent call last): 
    7268 File
    7269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7270 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7271 if not self.draw_new_frame(): 
    7272 File
    7273 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7274 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7275 surface.update_clip_caps(view) 
    7276 File
    7277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7278 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7279 p.update_direction(cpos) 
    7280 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7281  
    7282 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7283  
    7284 File
    7285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7286 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7287 p.update_direction(cpos) 
    7288  
    7289 See log for complete Python traceback. 
    7290  
    7291 Traceback (most recent call last): 
    7292 File
    7293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7294 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7295 if not self.draw_new_frame(): 
    7296 File
    7297 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7298 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7299 surface.update_clip_caps(view) 
    7300 File
    7301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7302 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7303 p.update_direction(cpos) 
    7304 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7305  
    7306 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7307  
    7308 File
    7309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7310 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7311 p.update_direction(cpos) 
    7312  
    7313 See log for complete Python traceback. 
    7314  
    7315 Traceback (most recent call last): 
    7316 File
    7317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7318 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7319 if not self.draw_new_frame(): 
    7320 File
    7321 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7322 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7323 surface.update_clip_caps(view) 
    7324 File
    7325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7326 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7327 p.update_direction(cpos) 
    7328 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7329  
    7330 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7331  
    7332 File
    7333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7334 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7335 p.update_direction(cpos) 
    7336  
    7337 See log for complete Python traceback. 
    7338  
    7339 Traceback (most recent call last): 
    7340 File
    7341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7342 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7343 if not self.draw_new_frame(): 
    7344 File
    7345 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7346 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7347 surface.update_clip_caps(view) 
    7348 File
    7349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7350 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7351 p.update_direction(cpos) 
    7352 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7353  
    7354 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7355  
    7356 File
    7357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7358 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7359 p.update_direction(cpos) 
    7360  
    7361 See log for complete Python traceback. 
    7362  
    7363 Traceback (most recent call last): 
    7364 File
    7365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7366 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7367 if not self.draw_new_frame(): 
    7368 File
    7369 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7370 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7371 surface.update_clip_caps(view) 
    7372 File
    7373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7374 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7375 p.update_direction(cpos) 
    7376 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7377  
    7378 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7379  
    7380 File
    7381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7382 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7383 p.update_direction(cpos) 
    7384  
    7385 See log for complete Python traceback. 
    7386  
    7387 Traceback (most recent call last): 
    7388 File
    7389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7390 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7391 if not self.draw_new_frame(): 
    7392 File
    7393 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7394 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7395 surface.update_clip_caps(view) 
    7396 File
    7397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7398 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7399 p.update_direction(cpos) 
    7400 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7401  
    7402 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7403  
    7404 File
    7405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7406 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7407 p.update_direction(cpos) 
    7408  
    7409 See log for complete Python traceback. 
    7410  
    7411 Traceback (most recent call last): 
    7412 File
    7413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7414 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7415 if not self.draw_new_frame(): 
    7416 File
    7417 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7418 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7419 surface.update_clip_caps(view) 
    7420 File
    7421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7422 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7423 p.update_direction(cpos) 
    7424 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7425  
    7426 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7427  
    7428 File
    7429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7430 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7431 p.update_direction(cpos) 
    7432  
    7433 See log for complete Python traceback. 
    7434  
    7435 Traceback (most recent call last): 
    7436 File
    7437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7438 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7439 if not self.draw_new_frame(): 
    7440 File
    7441 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7442 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7443 surface.update_clip_caps(view) 
    7444 File
    7445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7446 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7447 p.update_direction(cpos) 
    7448 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7449  
    7450 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7451  
    7452 File
    7453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7454 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7455 p.update_direction(cpos) 
    7456  
    7457 See log for complete Python traceback. 
    7458  
    7459 Traceback (most recent call last): 
    7460 File
    7461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7462 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7463 if not self.draw_new_frame(): 
    7464 File
    7465 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7466 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7467 surface.update_clip_caps(view) 
    7468 File
    7469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7470 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7471 p.update_direction(cpos) 
    7472 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7473  
    7474 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7475  
    7476 File
    7477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7478 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7479 p.update_direction(cpos) 
    7480  
    7481 See log for complete Python traceback. 
    7482  
    7483 Traceback (most recent call last): 
    7484 File
    7485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7486 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7487 if not self.draw_new_frame(): 
    7488 File
    7489 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7490 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7491 surface.update_clip_caps(view) 
    7492 File
    7493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7494 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7495 p.update_direction(cpos) 
    7496 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7497  
    7498 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7499  
    7500 File
    7501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7502 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7503 p.update_direction(cpos) 
    7504  
    7505 See log for complete Python traceback. 
    7506  
    7507 Traceback (most recent call last): 
    7508 File
    7509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7510 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7511 if not self.draw_new_frame(): 
    7512 File
    7513 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7514 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7515 surface.update_clip_caps(view) 
    7516 File
    7517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7518 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7519 p.update_direction(cpos) 
    7520 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7521  
    7522 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7523  
    7524 File
    7525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7526 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7527 p.update_direction(cpos) 
    7528  
    7529 See log for complete Python traceback. 
    7530  
    7531 Traceback (most recent call last): 
    7532 File
    7533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7534 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7535 if not self.draw_new_frame(): 
    7536 File
    7537 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7538 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7539 surface.update_clip_caps(view) 
    7540 File
    7541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7542 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7543 p.update_direction(cpos) 
    7544 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7545  
    7546 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7547  
    7548 File
    7549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7550 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7551 p.update_direction(cpos) 
    7552  
    7553 See log for complete Python traceback. 
    7554  
    7555 Traceback (most recent call last): 
    7556 File
    7557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7558 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7559 if not self.draw_new_frame(): 
    7560 File
    7561 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7562 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7563 surface.update_clip_caps(view) 
    7564 File
    7565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7566 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7567 p.update_direction(cpos) 
    7568 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7569  
    7570 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7571  
    7572 File
    7573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7574 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7575 p.update_direction(cpos) 
    7576  
    7577 See log for complete Python traceback. 
    7578  
    7579 Traceback (most recent call last): 
    7580 File
    7581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7582 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7583 if not self.draw_new_frame(): 
    7584 File
    7585 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7586 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7587 surface.update_clip_caps(view) 
    7588 File
    7589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7590 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7591 p.update_direction(cpos) 
    7592 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7593  
    7594 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7595  
    7596 File
    7597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7598 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7599 p.update_direction(cpos) 
    7600  
    7601 See log for complete Python traceback. 
    7602  
    7603 Traceback (most recent call last): 
    7604 File
    7605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7606 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7607 if not self.draw_new_frame(): 
    7608 File
    7609 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7610 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7611 surface.update_clip_caps(view) 
    7612 File
    7613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7614 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7615 p.update_direction(cpos) 
    7616 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7617  
    7618 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7619  
    7620 File
    7621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7622 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7623 p.update_direction(cpos) 
    7624  
    7625 See log for complete Python traceback. 
    7626  
    7627 Traceback (most recent call last): 
    7628 File
    7629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7630 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7631 if not self.draw_new_frame(): 
    7632 File
    7633 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7634 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7635 surface.update_clip_caps(view) 
    7636 File
    7637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7638 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7639 p.update_direction(cpos) 
    7640 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7641  
    7642 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7643  
    7644 File
    7645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7646 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7647 p.update_direction(cpos) 
    7648  
    7649 See log for complete Python traceback. 
    7650  
    7651 Traceback (most recent call last): 
    7652 File
    7653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7654 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7655 if not self.draw_new_frame(): 
    7656 File
    7657 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7658 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7659 surface.update_clip_caps(view) 
    7660 File
    7661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7662 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7663 p.update_direction(cpos) 
    7664 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7665  
    7666 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7667  
    7668 File
    7669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7670 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7671 p.update_direction(cpos) 
    7672  
    7673 See log for complete Python traceback. 
    7674  
    7675 Traceback (most recent call last): 
    7676 File
    7677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7678 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7679 if not self.draw_new_frame(): 
    7680 File
    7681 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7682 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7683 surface.update_clip_caps(view) 
    7684 File
    7685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7686 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7687 p.update_direction(cpos) 
    7688 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7689  
    7690 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7691  
    7692 File
    7693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7694 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7695 p.update_direction(cpos) 
    7696  
    7697 See log for complete Python traceback. 
    7698  
    7699 Traceback (most recent call last): 
    7700 File
    7701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7702 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7703 if not self.draw_new_frame(): 
    7704 File
    7705 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7706 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7707 surface.update_clip_caps(view) 
    7708 File
    7709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7710 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7711 p.update_direction(cpos) 
    7712 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7713  
    7714 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7715  
    7716 File
    7717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7718 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7719 p.update_direction(cpos) 
    7720  
    7721 See log for complete Python traceback. 
    7722  
    7723 Traceback (most recent call last): 
    7724 File
    7725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7726 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7727 if not self.draw_new_frame(): 
    7728 File
    7729 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7730 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7731 surface.update_clip_caps(view) 
    7732 File
    7733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7734 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7735 p.update_direction(cpos) 
    7736 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7737  
    7738 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7739  
    7740 File
    7741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7742 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7743 p.update_direction(cpos) 
    7744  
    7745 See log for complete Python traceback. 
    7746  
    7747 Traceback (most recent call last): 
    7748 File
    7749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7750 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7751 if not self.draw_new_frame(): 
    7752 File
    7753 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7754 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7755 surface.update_clip_caps(view) 
    7756 File
    7757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7758 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7759 p.update_direction(cpos) 
    7760 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7761  
    7762 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7763  
    7764 File
    7765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7766 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7767 p.update_direction(cpos) 
    7768  
    7769 See log for complete Python traceback. 
    7770  
    7771 Traceback (most recent call last): 
    7772 File
    7773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7774 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7775 if not self.draw_new_frame(): 
    7776 File
    7777 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7778 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7779 surface.update_clip_caps(view) 
    7780 File
    7781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7782 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7783 p.update_direction(cpos) 
    7784 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7785  
    7786 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7787  
    7788 File
    7789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7790 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7791 p.update_direction(cpos) 
    7792  
    7793 See log for complete Python traceback. 
    7794  
    7795 Traceback (most recent call last): 
    7796 File
    7797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7798 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7799 if not self.draw_new_frame(): 
    7800 File
    7801 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7802 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7803 surface.update_clip_caps(view) 
    7804 File
    7805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7806 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7807 p.update_direction(cpos) 
    7808 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7809  
    7810 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7811  
    7812 File
    7813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7814 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7815 p.update_direction(cpos) 
    7816  
    7817 See log for complete Python traceback. 
    7818  
    7819 Traceback (most recent call last): 
    7820 File
    7821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7822 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7823 if not self.draw_new_frame(): 
    7824 File
    7825 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7826 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7827 surface.update_clip_caps(view) 
    7828 File
    7829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7830 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7831 p.update_direction(cpos) 
    7832 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7833  
    7834 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7835  
    7836 File
    7837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7838 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7839 p.update_direction(cpos) 
    7840  
    7841 See log for complete Python traceback. 
    7842  
    7843 Traceback (most recent call last): 
    7844 File
    7845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7846 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7847 if not self.draw_new_frame(): 
    7848 File
    7849 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7850 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7851 surface.update_clip_caps(view) 
    7852 File
    7853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7854 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7855 p.update_direction(cpos) 
    7856 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7857  
    7858 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7859  
    7860 File
    7861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7862 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7863 p.update_direction(cpos) 
    7864  
    7865 See log for complete Python traceback. 
    7866  
    7867 Traceback (most recent call last): 
    7868 File
    7869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7870 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7871 if not self.draw_new_frame(): 
    7872 File
    7873 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7874 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7875 surface.update_clip_caps(view) 
    7876 File
    7877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7878 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7879 p.update_direction(cpos) 
    7880 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7881  
    7882 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7883  
    7884 File
    7885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7886 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7887 p.update_direction(cpos) 
    7888  
    7889 See log for complete Python traceback. 
    7890  
    7891 Traceback (most recent call last): 
    7892 File
    7893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7894 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7895 if not self.draw_new_frame(): 
    7896 File
    7897 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7898 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7899 surface.update_clip_caps(view) 
    7900 File
    7901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7902 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7903 p.update_direction(cpos) 
    7904 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7905  
    7906 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7907  
    7908 File
    7909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7910 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7911 p.update_direction(cpos) 
    7912  
    7913 See log for complete Python traceback. 
    7914  
    7915 Traceback (most recent call last): 
    7916 File
    7917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7918 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7919 if not self.draw_new_frame(): 
    7920 File
    7921 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7922 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7923 surface.update_clip_caps(view) 
    7924 File
    7925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7926 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7927 p.update_direction(cpos) 
    7928 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7929  
    7930 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7931  
    7932 File
    7933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7934 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7935 p.update_direction(cpos) 
    7936  
    7937 See log for complete Python traceback. 
    7938  
    7939 Traceback (most recent call last): 
    7940 File
    7941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7942 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7943 if not self.draw_new_frame(): 
    7944 File
    7945 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7946 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7947 surface.update_clip_caps(view) 
    7948 File
    7949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7950 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7951 p.update_direction(cpos) 
    7952 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7953  
    7954 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7955  
    7956 File
    7957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7958 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7959 p.update_direction(cpos) 
    7960  
    7961 See log for complete Python traceback. 
    7962  
    7963 Traceback (most recent call last): 
    7964 File
    7965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7966 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7967 if not self.draw_new_frame(): 
    7968 File
    7969 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7970 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7971 surface.update_clip_caps(view) 
    7972 File
    7973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7974 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7975 p.update_direction(cpos) 
    7976 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7977  
    7978 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    7979  
    7980 File
    7981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7982 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7983 p.update_direction(cpos) 
    7984  
    7985 See log for complete Python traceback. 
    7986  
    7987 Traceback (most recent call last): 
    7988 File
    7989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7990 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    7991 if not self.draw_new_frame(): 
    7992 File
    7993 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7994 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    7995 surface.update_clip_caps(view) 
    7996 File
    7997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    7998 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    7999 p.update_direction(cpos) 
    8000 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8001  
    8002 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8003  
    8004 File
    8005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8006 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8007 p.update_direction(cpos) 
    8008  
    8009 See log for complete Python traceback. 
    8010  
    8011 Traceback (most recent call last): 
    8012 File
    8013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8014 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8015 if not self.draw_new_frame(): 
    8016 File
    8017 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8018 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8019 surface.update_clip_caps(view) 
    8020 File
    8021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8022 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8023 p.update_direction(cpos) 
    8024 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8025  
    8026 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8027  
    8028 File
    8029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8030 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8031 p.update_direction(cpos) 
    8032  
    8033 See log for complete Python traceback. 
    8034  
    8035 Traceback (most recent call last): 
    8036 File
    8037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8038 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8039 if not self.draw_new_frame(): 
    8040 File
    8041 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8042 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8043 surface.update_clip_caps(view) 
    8044 File
    8045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8046 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8047 p.update_direction(cpos) 
    8048 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8049  
    8050 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8051  
    8052 File
    8053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8054 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8055 p.update_direction(cpos) 
    8056  
    8057 See log for complete Python traceback. 
    8058  
    8059 Traceback (most recent call last): 
    8060 File
    8061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8062 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8063 if not self.draw_new_frame(): 
    8064 File
    8065 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8066 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8067 surface.update_clip_caps(view) 
    8068 File
    8069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8070 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8071 p.update_direction(cpos) 
    8072 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8073  
    8074 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8075  
    8076 File
    8077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8078 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8079 p.update_direction(cpos) 
    8080  
    8081 See log for complete Python traceback. 
    8082  
    8083 Traceback (most recent call last): 
    8084 File
    8085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8086 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8087 if not self.draw_new_frame(): 
    8088 File
    8089 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8090 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8091 surface.update_clip_caps(view) 
    8092 File
    8093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8094 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8095 p.update_direction(cpos) 
    8096 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8097  
    8098 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8099  
    8100 File
    8101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8102 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8103 p.update_direction(cpos) 
    8104  
    8105 See log for complete Python traceback. 
    8106  
    8107 Traceback (most recent call last): 
    8108 File
    8109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8110 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8111 if not self.draw_new_frame(): 
    8112 File
    8113 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8114 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8115 surface.update_clip_caps(view) 
    8116 File
    8117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8118 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8119 p.update_direction(cpos) 
    8120 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8121  
    8122 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8123  
    8124 File
    8125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8126 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8127 p.update_direction(cpos) 
    8128  
    8129 See log for complete Python traceback. 
    8130  
    8131 Traceback (most recent call last): 
    8132 File
    8133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8134 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8135 if not self.draw_new_frame(): 
    8136 File
    8137 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8138 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8139 surface.update_clip_caps(view) 
    8140 File
    8141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8142 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8143 p.update_direction(cpos) 
    8144 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8145  
    8146 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8147  
    8148 File
    8149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8150 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8151 p.update_direction(cpos) 
    8152  
    8153 See log for complete Python traceback. 
    8154  
    8155 Traceback (most recent call last): 
    8156 File
    8157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8158 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8159 if not self.draw_new_frame(): 
    8160 File
    8161 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8162 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8163 surface.update_clip_caps(view) 
    8164 File
    8165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8166 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8167 p.update_direction(cpos) 
    8168 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8169  
    8170 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8171  
    8172 File
    8173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8174 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8175 p.update_direction(cpos) 
    8176  
    8177 See log for complete Python traceback. 
    8178  
    8179 Traceback (most recent call last): 
    8180 File
    8181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8182 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8183 if not self.draw_new_frame(): 
    8184 File
    8185 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8186 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8187 surface.update_clip_caps(view) 
    8188 File
    8189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8190 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8191 p.update_direction(cpos) 
    8192 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8193  
    8194 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8195  
    8196 File
    8197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8198 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8199 p.update_direction(cpos) 
    8200  
    8201 See log for complete Python traceback. 
    8202  
    8203 Traceback (most recent call last): 
    8204 File
    8205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8206 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8207 if not self.draw_new_frame(): 
    8208 File
    8209 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8210 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8211 surface.update_clip_caps(view) 
    8212 File
    8213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8214 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8215 p.update_direction(cpos) 
    8216 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8217  
    8218 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8219  
    8220 File
    8221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8222 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8223 p.update_direction(cpos) 
    8224  
    8225 See log for complete Python traceback. 
    8226  
    8227 Traceback (most recent call last): 
    8228 File
    8229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8230 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8231 if not self.draw_new_frame(): 
    8232 File
    8233 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8234 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8235 surface.update_clip_caps(view) 
    8236 File
    8237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8238 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8239 p.update_direction(cpos) 
    8240 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8241  
    8242 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8243  
    8244 File
    8245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8246 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8247 p.update_direction(cpos) 
    8248  
    8249 See log for complete Python traceback. 
    8250  
    8251 Traceback (most recent call last): 
    8252 File
    8253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8254 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8255 if not self.draw_new_frame(): 
    8256 File
    8257 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8258 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8259 surface.update_clip_caps(view) 
    8260 File
    8261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8262 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8263 p.update_direction(cpos) 
    8264 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8265  
    8266 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8267  
    8268 File
    8269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8270 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8271 p.update_direction(cpos) 
    8272  
    8273 See log for complete Python traceback. 
    8274  
    8275 Traceback (most recent call last): 
    8276 File
    8277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8278 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8279 if not self.draw_new_frame(): 
    8280 File
    8281 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8282 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8283 surface.update_clip_caps(view) 
    8284 File
    8285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8286 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8287 p.update_direction(cpos) 
    8288 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8289  
    8290 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8291  
    8292 File
    8293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8294 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8295 p.update_direction(cpos) 
    8296  
    8297 See log for complete Python traceback. 
    8298  
    8299 Traceback (most recent call last): 
    8300 File
    8301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8302 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8303 if not self.draw_new_frame(): 
    8304 File
    8305 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8306 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8307 surface.update_clip_caps(view) 
    8308 File
    8309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8310 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8311 p.update_direction(cpos) 
    8312 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8313  
    8314 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8315  
    8316 File
    8317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8318 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8319 p.update_direction(cpos) 
    8320  
    8321 See log for complete Python traceback. 
    8322  
    8323 Traceback (most recent call last): 
    8324 File
    8325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8326 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8327 if not self.draw_new_frame(): 
    8328 File
    8329 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8330 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8331 surface.update_clip_caps(view) 
    8332 File
    8333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8334 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8335 p.update_direction(cpos) 
    8336 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8337  
    8338 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8339  
    8340 File
    8341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8342 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8343 p.update_direction(cpos) 
    8344  
    8345 See log for complete Python traceback. 
    8346  
    8347 Traceback (most recent call last): 
    8348 File
    8349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8350 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8351 if not self.draw_new_frame(): 
    8352 File
    8353 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8354 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8355 surface.update_clip_caps(view) 
    8356 File
    8357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8358 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8359 p.update_direction(cpos) 
    8360 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8361  
    8362 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8363  
    8364 File
    8365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8366 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8367 p.update_direction(cpos) 
    8368  
    8369 See log for complete Python traceback. 
    8370  
    8371 Traceback (most recent call last): 
    8372 File
    8373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8374 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8375 if not self.draw_new_frame(): 
    8376 File
    8377 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8378 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8379 surface.update_clip_caps(view) 
    8380 File
    8381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8382 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8383 p.update_direction(cpos) 
    8384 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8385  
    8386 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8387  
    8388 File
    8389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8390 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8391 p.update_direction(cpos) 
    8392  
    8393 See log for complete Python traceback. 
    8394  
    8395 Traceback (most recent call last): 
    8396 File
    8397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8398 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8399 if not self.draw_new_frame(): 
    8400 File
    8401 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8402 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8403 surface.update_clip_caps(view) 
    8404 File
    8405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8406 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8407 p.update_direction(cpos) 
    8408 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8409  
    8410 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8411  
    8412 File
    8413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8414 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8415 p.update_direction(cpos) 
    8416  
    8417 See log for complete Python traceback. 
    8418  
    8419 Traceback (most recent call last): 
    8420 File
    8421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8422 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8423 if not self.draw_new_frame(): 
    8424 File
    8425 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8426 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8427 surface.update_clip_caps(view) 
    8428 File
    8429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8430 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8431 p.update_direction(cpos) 
    8432 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8433  
    8434 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8435  
    8436 File
    8437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8438 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8439 p.update_direction(cpos) 
    8440  
    8441 See log for complete Python traceback. 
    8442  
    8443 Traceback (most recent call last): 
    8444 File
    8445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8446 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8447 if not self.draw_new_frame(): 
    8448 File
    8449 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8450 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8451 surface.update_clip_caps(view) 
    8452 File
    8453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8454 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8455 p.update_direction(cpos) 
    8456 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8457  
    8458 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8459  
    8460 File
    8461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8462 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8463 p.update_direction(cpos) 
    8464  
    8465 See log for complete Python traceback. 
    8466  
    8467 Traceback (most recent call last): 
    8468 File
    8469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8470 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8471 if not self.draw_new_frame(): 
    8472 File
    8473 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8474 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8475 surface.update_clip_caps(view) 
    8476 File
    8477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8478 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8479 p.update_direction(cpos) 
    8480 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8481  
    8482 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8483  
    8484 File
    8485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8486 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8487 p.update_direction(cpos) 
    8488  
    8489 See log for complete Python traceback. 
    8490  
    8491 Traceback (most recent call last): 
    8492 File
    8493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8494 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8495 if not self.draw_new_frame(): 
    8496 File
    8497 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8498 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8499 surface.update_clip_caps(view) 
    8500 File
    8501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8502 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8503 p.update_direction(cpos) 
    8504 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8505  
    8506 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8507  
    8508 File
    8509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8510 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8511 p.update_direction(cpos) 
    8512  
    8513 See log for complete Python traceback. 
    8514  
    8515 Traceback (most recent call last): 
    8516 File
    8517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8518 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8519 if not self.draw_new_frame(): 
    8520 File
    8521 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8522 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8523 surface.update_clip_caps(view) 
    8524 File
    8525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8526 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8527 p.update_direction(cpos) 
    8528 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8529  
    8530 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8531  
    8532 File
    8533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8534 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8535 p.update_direction(cpos) 
    8536  
    8537 See log for complete Python traceback. 
    8538  
    8539 Traceback (most recent call last): 
    8540 File
    8541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8542 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8543 if not self.draw_new_frame(): 
    8544 File
    8545 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8546 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8547 surface.update_clip_caps(view) 
    8548 File
    8549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8550 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8551 p.update_direction(cpos) 
    8552 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8553  
    8554 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8555  
    8556 File
    8557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8558 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8559 p.update_direction(cpos) 
    8560  
    8561 See log for complete Python traceback. 
    8562  
    8563 Traceback (most recent call last): 
    8564 File
    8565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8566 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8567 if not self.draw_new_frame(): 
    8568 File
    8569 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8570 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8571 surface.update_clip_caps(view) 
    8572 File
    8573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8574 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8575 p.update_direction(cpos) 
    8576 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8577  
    8578 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8579  
    8580 File
    8581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8582 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8583 p.update_direction(cpos) 
    8584  
    8585 See log for complete Python traceback. 
    8586  
    8587 Traceback (most recent call last): 
    8588 File
    8589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8590 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8591 if not self.draw_new_frame(): 
    8592 File
    8593 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8594 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8595 surface.update_clip_caps(view) 
    8596 File
    8597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8598 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8599 p.update_direction(cpos) 
    8600 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8601  
    8602 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8603  
    8604 File
    8605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8606 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8607 p.update_direction(cpos) 
    8608  
    8609 See log for complete Python traceback. 
    8610  
    8611 Traceback (most recent call last): 
    8612 File
    8613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8614 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8615 if not self.draw_new_frame(): 
    8616 File
    8617 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8618 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8619 surface.update_clip_caps(view) 
    8620 File
    8621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8622 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8623 p.update_direction(cpos) 
    8624 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8625  
    8626 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8627  
    8628 File
    8629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8630 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8631 p.update_direction(cpos) 
    8632  
    8633 See log for complete Python traceback. 
    8634  
    8635 Traceback (most recent call last): 
    8636 File
    8637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8638 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8639 if not self.draw_new_frame(): 
    8640 File
    8641 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8642 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8643 surface.update_clip_caps(view) 
    8644 File
    8645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8646 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8647 p.update_direction(cpos) 
    8648 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8649  
    8650 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8651  
    8652 File
    8653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8654 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8655 p.update_direction(cpos) 
    8656  
    8657 See log for complete Python traceback. 
    8658  
    8659 Traceback (most recent call last): 
    8660 File
    8661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8662 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8663 if not self.draw_new_frame(): 
    8664 File
    8665 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8666 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8667 surface.update_clip_caps(view) 
    8668 File
    8669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8670 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8671 p.update_direction(cpos) 
    8672 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8673  
    8674 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8675  
    8676 File
    8677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8678 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8679 p.update_direction(cpos) 
    8680  
    8681 See log for complete Python traceback. 
    8682  
    8683 Traceback (most recent call last): 
    8684 File
    8685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8686 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8687 if not self.draw_new_frame(): 
    8688 File
    8689 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8690 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8691 surface.update_clip_caps(view) 
    8692 File
    8693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8694 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8695 p.update_direction(cpos) 
    8696 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8697  
    8698 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8699  
    8700 File
    8701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8702 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8703 p.update_direction(cpos) 
    8704  
    8705 See log for complete Python traceback. 
    8706  
    8707 Traceback (most recent call last): 
    8708 File
    8709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8710 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8711 if not self.draw_new_frame(): 
    8712 File
    8713 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8714 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8715 surface.update_clip_caps(view) 
    8716 File
    8717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8718 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8719 p.update_direction(cpos) 
    8720 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8721  
    8722 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8723  
    8724 File
    8725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8726 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8727 p.update_direction(cpos) 
    8728  
    8729 See log for complete Python traceback. 
    8730  
    8731 Traceback (most recent call last): 
    8732 File
    8733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8734 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8735 if not self.draw_new_frame(): 
    8736 File
    8737 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8738 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8739 surface.update_clip_caps(view) 
    8740 File
    8741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8742 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8743 p.update_direction(cpos) 
    8744 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8745  
    8746 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8747  
    8748 File
    8749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8750 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8751 p.update_direction(cpos) 
    8752  
    8753 See log for complete Python traceback. 
    8754  
    8755 Traceback (most recent call last): 
    8756 File
    8757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8758 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8759 if not self.draw_new_frame(): 
    8760 File
    8761 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8762 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8763 surface.update_clip_caps(view) 
    8764 File
    8765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8766 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8767 p.update_direction(cpos) 
    8768 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8769  
    8770 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8771  
    8772 File
    8773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8774 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8775 p.update_direction(cpos) 
    8776  
    8777 See log for complete Python traceback. 
    8778  
    8779 Traceback (most recent call last): 
    8780 File
    8781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8782 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8783 if not self.draw_new_frame(): 
    8784 File
    8785 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8786 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8787 surface.update_clip_caps(view) 
    8788 File
    8789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8790 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8791 p.update_direction(cpos) 
    8792 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8793  
    8794 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8795  
    8796 File
    8797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8798 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8799 p.update_direction(cpos) 
    8800  
    8801 See log for complete Python traceback. 
    8802  
    8803 Traceback (most recent call last): 
    8804 File
    8805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8806 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8807 if not self.draw_new_frame(): 
    8808 File
    8809 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8810 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8811 surface.update_clip_caps(view) 
    8812 File
    8813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8814 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8815 p.update_direction(cpos) 
    8816 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8817  
    8818 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8819  
    8820 File
    8821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8822 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8823 p.update_direction(cpos) 
    8824  
    8825 See log for complete Python traceback. 
    8826  
    8827 Traceback (most recent call last): 
    8828 File
    8829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8830 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8831 if not self.draw_new_frame(): 
    8832 File
    8833 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8834 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8835 surface.update_clip_caps(view) 
    8836 File
    8837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8838 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8839 p.update_direction(cpos) 
    8840 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8841  
    8842 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8843  
    8844 File
    8845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8846 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8847 p.update_direction(cpos) 
    8848  
    8849 See log for complete Python traceback. 
    8850  
    8851 Traceback (most recent call last): 
    8852 File
    8853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8854 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8855 if not self.draw_new_frame(): 
    8856 File
    8857 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8858 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8859 surface.update_clip_caps(view) 
    8860 File
    8861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8862 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8863 p.update_direction(cpos) 
    8864 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8865  
    8866 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8867  
    8868 File
    8869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8870 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8871 p.update_direction(cpos) 
    8872  
    8873 See log for complete Python traceback. 
    8874  
    8875 Traceback (most recent call last): 
    8876 File
    8877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8878 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8879 if not self.draw_new_frame(): 
    8880 File
    8881 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8882 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8883 surface.update_clip_caps(view) 
    8884 File
    8885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8886 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8887 p.update_direction(cpos) 
    8888 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8889  
    8890 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8891  
    8892 File
    8893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8894 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8895 p.update_direction(cpos) 
    8896  
    8897 See log for complete Python traceback. 
    8898  
    8899 Traceback (most recent call last): 
    8900 File
    8901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8902 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8903 if not self.draw_new_frame(): 
    8904 File
    8905 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8906 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8907 surface.update_clip_caps(view) 
    8908 File
    8909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8910 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8911 p.update_direction(cpos) 
    8912 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8913  
    8914 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8915  
    8916 File
    8917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8918 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8919 p.update_direction(cpos) 
    8920  
    8921 See log for complete Python traceback. 
    8922  
    8923 Traceback (most recent call last): 
    8924 File
    8925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8926 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8927 if not self.draw_new_frame(): 
    8928 File
    8929 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8930 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8931 surface.update_clip_caps(view) 
    8932 File
    8933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8934 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8935 p.update_direction(cpos) 
    8936 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8937  
    8938 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8939  
    8940 File
    8941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8942 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8943 p.update_direction(cpos) 
    8944  
    8945 See log for complete Python traceback. 
    8946  
    8947 Traceback (most recent call last): 
    8948 File
    8949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8950 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8951 if not self.draw_new_frame(): 
    8952 File
    8953 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8954 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8955 surface.update_clip_caps(view) 
    8956 File
    8957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8958 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8959 p.update_direction(cpos) 
    8960 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8961  
    8962 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8963  
    8964 File
    8965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8966 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8967 p.update_direction(cpos) 
    8968  
    8969 See log for complete Python traceback. 
    8970  
    8971 Traceback (most recent call last): 
    8972 File
    8973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8974 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8975 if not self.draw_new_frame(): 
    8976 File
    8977 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8978 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    8979 surface.update_clip_caps(view) 
    8980 File
    8981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8982 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8983 p.update_direction(cpos) 
    8984 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8985  
    8986 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    8987  
    8988 File
    8989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8990 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    8991 p.update_direction(cpos) 
    8992  
    8993 See log for complete Python traceback. 
    8994  
    8995 Traceback (most recent call last): 
    8996 File
    8997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    8998 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    8999 if not self.draw_new_frame(): 
    9000 File
    9001 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9002 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9003 surface.update_clip_caps(view) 
    9004 File
    9005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9006 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9007 p.update_direction(cpos) 
    9008 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9009  
    9010 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9011  
    9012 File
    9013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9014 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9015 p.update_direction(cpos) 
    9016  
    9017 See log for complete Python traceback. 
    9018  
    9019 Traceback (most recent call last): 
    9020 File
    9021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9022 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9023 if not self.draw_new_frame(): 
    9024 File
    9025 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9026 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9027 surface.update_clip_caps(view) 
    9028 File
    9029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9030 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9031 p.update_direction(cpos) 
    9032 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9033  
    9034 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9035  
    9036 File
    9037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9038 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9039 p.update_direction(cpos) 
    9040  
    9041 See log for complete Python traceback. 
    9042  
    9043 Traceback (most recent call last): 
    9044 File
    9045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9046 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9047 if not self.draw_new_frame(): 
    9048 File
    9049 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9050 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9051 surface.update_clip_caps(view) 
    9052 File
    9053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9054 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9055 p.update_direction(cpos) 
    9056 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9057  
    9058 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9059  
    9060 File
    9061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9062 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9063 p.update_direction(cpos) 
    9064  
    9065 See log for complete Python traceback. 
    9066  
    9067 Traceback (most recent call last): 
    9068 File
    9069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9070 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9071 if not self.draw_new_frame(): 
    9072 File
    9073 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9074 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9075 surface.update_clip_caps(view) 
    9076 File
    9077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9078 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9079 p.update_direction(cpos) 
    9080 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9081  
    9082 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9083  
    9084 File
    9085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9086 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9087 p.update_direction(cpos) 
    9088  
    9089 See log for complete Python traceback. 
    9090  
    9091 Traceback (most recent call last): 
    9092 File
    9093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9094 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9095 if not self.draw_new_frame(): 
    9096 File
    9097 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9098 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9099 surface.update_clip_caps(view) 
    9100 File
    9101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9102 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9103 p.update_direction(cpos) 
    9104 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9105  
    9106 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9107  
    9108 File
    9109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9110 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9111 p.update_direction(cpos) 
    9112  
    9113 See log for complete Python traceback. 
    9114  
    9115 Traceback (most recent call last): 
    9116 File
    9117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9118 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9119 if not self.draw_new_frame(): 
    9120 File
    9121 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9122 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9123 surface.update_clip_caps(view) 
    9124 File
    9125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9126 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9127 p.update_direction(cpos) 
    9128 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9129  
    9130 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9131  
    9132 File
    9133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9134 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9135 p.update_direction(cpos) 
    9136  
    9137 See log for complete Python traceback. 
    9138  
    9139 Traceback (most recent call last): 
    9140 File
    9141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9142 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9143 if not self.draw_new_frame(): 
    9144 File
    9145 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9146 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9147 surface.update_clip_caps(view) 
    9148 File
    9149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9150 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9151 p.update_direction(cpos) 
    9152 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9153  
    9154 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9155  
    9156 File
    9157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9158 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9159 p.update_direction(cpos) 
    9160  
    9161 See log for complete Python traceback. 
    9162  
    9163 Traceback (most recent call last): 
    9164 File
    9165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9166 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9167 if not self.draw_new_frame(): 
    9168 File
    9169 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9170 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9171 surface.update_clip_caps(view) 
    9172 File
    9173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9174 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9175 p.update_direction(cpos) 
    9176 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9177  
    9178 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9179  
    9180 File
    9181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9182 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9183 p.update_direction(cpos) 
    9184  
    9185 See log for complete Python traceback. 
    9186  
    9187 Traceback (most recent call last): 
    9188 File
    9189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9190 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9191 if not self.draw_new_frame(): 
    9192 File
    9193 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9194 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9195 surface.update_clip_caps(view) 
    9196 File
    9197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9198 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9199 p.update_direction(cpos) 
    9200 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9201  
    9202 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9203  
    9204 File
    9205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9206 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9207 p.update_direction(cpos) 
    9208  
    9209 See log for complete Python traceback. 
    9210  
    9211 Traceback (most recent call last): 
    9212 File
    9213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9214 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9215 if not self.draw_new_frame(): 
    9216 File
    9217 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9218 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9219 surface.update_clip_caps(view) 
    9220 File
    9221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9222 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9223 p.update_direction(cpos) 
    9224 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9225  
    9226 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9227  
    9228 File
    9229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9230 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9231 p.update_direction(cpos) 
    9232  
    9233 See log for complete Python traceback. 
    9234  
    9235 Traceback (most recent call last): 
    9236 File
    9237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9238 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9239 if not self.draw_new_frame(): 
    9240 File
    9241 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9242 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9243 surface.update_clip_caps(view) 
    9244 File
    9245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9246 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9247 p.update_direction(cpos) 
    9248 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9249  
    9250 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9251  
    9252 File
    9253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9254 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9255 p.update_direction(cpos) 
    9256  
    9257 See log for complete Python traceback. 
    9258  
    9259 Traceback (most recent call last): 
    9260 File
    9261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9262 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9263 if not self.draw_new_frame(): 
    9264 File
    9265 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9266 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9267 surface.update_clip_caps(view) 
    9268 File
    9269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9270 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9271 p.update_direction(cpos) 
    9272 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9273  
    9274 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9275  
    9276 File
    9277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9278 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9279 p.update_direction(cpos) 
    9280  
    9281 See log for complete Python traceback. 
    9282  
    9283 Traceback (most recent call last): 
    9284 File
    9285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9286 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9287 if not self.draw_new_frame(): 
    9288 File
    9289 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9290 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9291 surface.update_clip_caps(view) 
    9292 File
    9293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9294 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9295 p.update_direction(cpos) 
    9296 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9297  
    9298 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9299  
    9300 File
    9301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9302 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9303 p.update_direction(cpos) 
    9304  
    9305 See log for complete Python traceback. 
    9306  
    9307 Traceback (most recent call last): 
    9308 File
    9309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9310 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9311 if not self.draw_new_frame(): 
    9312 File
    9313 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9314 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9315 surface.update_clip_caps(view) 
    9316 File
    9317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9318 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9319 p.update_direction(cpos) 
    9320 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9321  
    9322 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9323  
    9324 File
    9325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9326 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9327 p.update_direction(cpos) 
    9328  
    9329 See log for complete Python traceback. 
    9330  
    9331 Traceback (most recent call last): 
    9332 File
    9333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9334 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9335 if not self.draw_new_frame(): 
    9336 File
    9337 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9338 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9339 surface.update_clip_caps(view) 
    9340 File
    9341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9342 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9343 p.update_direction(cpos) 
    9344 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9345  
    9346 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9347  
    9348 File
    9349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9350 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9351 p.update_direction(cpos) 
    9352  
    9353 See log for complete Python traceback. 
    9354  
    9355 Traceback (most recent call last): 
    9356 File
    9357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9358 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9359 if not self.draw_new_frame(): 
    9360 File
    9361 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9362 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9363 surface.update_clip_caps(view) 
    9364 File
    9365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9366 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9367 p.update_direction(cpos) 
    9368 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9369  
    9370 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9371  
    9372 File
    9373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9374 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9375 p.update_direction(cpos) 
    9376  
    9377 See log for complete Python traceback. 
    9378  
    9379 Traceback (most recent call last): 
    9380 File
    9381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9382 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9383 if not self.draw_new_frame(): 
    9384 File
    9385 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9386 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9387 surface.update_clip_caps(view) 
    9388 File
    9389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9390 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9391 p.update_direction(cpos) 
    9392 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9393  
    9394 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9395  
    9396 File
    9397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9398 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9399 p.update_direction(cpos) 
    9400  
    9401 See log for complete Python traceback. 
    9402  
    9403 Traceback (most recent call last): 
    9404 File
    9405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9406 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9407 if not self.draw_new_frame(): 
    9408 File
    9409 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9410 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9411 surface.update_clip_caps(view) 
    9412 File
    9413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9414 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9415 p.update_direction(cpos) 
    9416 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9417  
    9418 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9419  
    9420 File
    9421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9422 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9423 p.update_direction(cpos) 
    9424  
    9425 See log for complete Python traceback. 
    9426  
    9427 Traceback (most recent call last): 
    9428 File
    9429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9430 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9431 if not self.draw_new_frame(): 
    9432 File
    9433 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9434 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9435 surface.update_clip_caps(view) 
    9436 File
    9437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9438 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9439 p.update_direction(cpos) 
    9440 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9441  
    9442 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9443  
    9444 File
    9445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9446 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9447 p.update_direction(cpos) 
    9448  
    9449 See log for complete Python traceback. 
    9450  
    9451 Traceback (most recent call last): 
    9452 File
    9453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9454 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9455 if not self.draw_new_frame(): 
    9456 File
    9457 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9458 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9459 surface.update_clip_caps(view) 
    9460 File
    9461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9462 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9463 p.update_direction(cpos) 
    9464 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9465  
    9466 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9467  
    9468 File
    9469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9470 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9471 p.update_direction(cpos) 
    9472  
    9473 See log for complete Python traceback. 
    9474  
    9475 Traceback (most recent call last): 
    9476 File
    9477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9478 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9479 if not self.draw_new_frame(): 
    9480 File
    9481 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9482 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9483 surface.update_clip_caps(view) 
    9484 File
    9485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9486 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9487 p.update_direction(cpos) 
    9488 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9489  
    9490 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9491  
    9492 File
    9493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9494 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9495 p.update_direction(cpos) 
    9496  
    9497 See log for complete Python traceback. 
    9498  
    9499 Traceback (most recent call last): 
    9500 File
    9501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9502 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9503 if not self.draw_new_frame(): 
    9504 File
    9505 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9506 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9507 surface.update_clip_caps(view) 
    9508 File
    9509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9510 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9511 p.update_direction(cpos) 
    9512 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9513  
    9514 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9515  
    9516 File
    9517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9518 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9519 p.update_direction(cpos) 
    9520  
    9521 See log for complete Python traceback. 
    9522  
    9523 Traceback (most recent call last): 
    9524 File
    9525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9526 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9527 if not self.draw_new_frame(): 
    9528 File
    9529 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9530 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9531 surface.update_clip_caps(view) 
    9532 File
    9533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9534 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9535 p.update_direction(cpos) 
    9536 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9537  
    9538 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9539  
    9540 File
    9541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9542 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9543 p.update_direction(cpos) 
    9544  
    9545 See log for complete Python traceback. 
    9546  
    9547 Traceback (most recent call last): 
    9548 File
    9549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9550 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9551 if not self.draw_new_frame(): 
    9552 File
    9553 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9554 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9555 surface.update_clip_caps(view) 
    9556 File
    9557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9558 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9559 p.update_direction(cpos) 
    9560 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9561  
    9562 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9563  
    9564 File
    9565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9566 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9567 p.update_direction(cpos) 
    9568  
    9569 See log for complete Python traceback. 
    9570  
    9571 Traceback (most recent call last): 
    9572 File
    9573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9574 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9575 if not self.draw_new_frame(): 
    9576 File
    9577 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9578 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9579 surface.update_clip_caps(view) 
    9580 File
    9581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9582 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9583 p.update_direction(cpos) 
    9584 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9585  
    9586 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9587  
    9588 File
    9589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9590 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9591 p.update_direction(cpos) 
    9592  
    9593 See log for complete Python traceback. 
    9594  
    9595 Traceback (most recent call last): 
    9596 File
    9597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9598 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9599 if not self.draw_new_frame(): 
    9600 File
    9601 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9602 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9603 surface.update_clip_caps(view) 
    9604 File
    9605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9606 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9607 p.update_direction(cpos) 
    9608 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9609  
    9610 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9611  
    9612 File
    9613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9614 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9615 p.update_direction(cpos) 
    9616  
    9617 See log for complete Python traceback. 
    9618  
    9619 Traceback (most recent call last): 
    9620 File
    9621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9622 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9623 if not self.draw_new_frame(): 
    9624 File
    9625 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9626 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9627 surface.update_clip_caps(view) 
    9628 File
    9629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9630 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9631 p.update_direction(cpos) 
    9632 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9633  
    9634 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9635  
    9636 File
    9637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9638 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9639 p.update_direction(cpos) 
    9640  
    9641 See log for complete Python traceback. 
    9642  
    9643 Traceback (most recent call last): 
    9644 File
    9645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9646 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9647 if not self.draw_new_frame(): 
    9648 File
    9649 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9650 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9651 surface.update_clip_caps(view) 
    9652 File
    9653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9654 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9655 p.update_direction(cpos) 
    9656 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9657  
    9658 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9659  
    9660 File
    9661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9662 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9663 p.update_direction(cpos) 
    9664  
    9665 See log for complete Python traceback. 
    9666  
    9667 Traceback (most recent call last): 
    9668 File
    9669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9670 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9671 if not self.draw_new_frame(): 
    9672 File
    9673 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9674 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9675 surface.update_clip_caps(view) 
    9676 File
    9677 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9678 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9679 p.update_direction(cpos) 
    9680 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9681  
    9682 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9683  
    9684 File
    9685 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9686 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9687 p.update_direction(cpos) 
    9688  
    9689 See log for complete Python traceback. 
    9690  
    9691 Traceback (most recent call last): 
    9692 File
    9693 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9694 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9695 if not self.draw_new_frame(): 
    9696 File
    9697 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9698 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9699 surface.update_clip_caps(view) 
    9700 File
    9701 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9702 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9703 p.update_direction(cpos) 
    9704 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9705  
    9706 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9707  
    9708 File
    9709 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9710 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9711 p.update_direction(cpos) 
    9712  
    9713 See log for complete Python traceback. 
    9714  
    9715 Traceback (most recent call last): 
    9716 File
    9717 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9718 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9719 if not self.draw_new_frame(): 
    9720 File
    9721 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9722 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9723 surface.update_clip_caps(view) 
    9724 File
    9725 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9726 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9727 p.update_direction(cpos) 
    9728 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9729  
    9730 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9731  
    9732 File
    9733 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9734 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9735 p.update_direction(cpos) 
    9736  
    9737 See log for complete Python traceback. 
    9738  
    9739 Traceback (most recent call last): 
    9740 File
    9741 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9742 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9743 if not self.draw_new_frame(): 
    9744 File
    9745 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9746 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9747 surface.update_clip_caps(view) 
    9748 File
    9749 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9750 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9751 p.update_direction(cpos) 
    9752 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9753  
    9754 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9755  
    9756 File
    9757 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9758 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9759 p.update_direction(cpos) 
    9760  
    9761 See log for complete Python traceback. 
    9762  
    9763 Traceback (most recent call last): 
    9764 File
    9765 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9766 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9767 if not self.draw_new_frame(): 
    9768 File
    9769 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9770 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9771 surface.update_clip_caps(view) 
    9772 File
    9773 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9774 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9775 p.update_direction(cpos) 
    9776 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9777  
    9778 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9779  
    9780 File
    9781 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9782 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9783 p.update_direction(cpos) 
    9784  
    9785 See log for complete Python traceback. 
    9786  
    9787 Traceback (most recent call last): 
    9788 File
    9789 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9790 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9791 if not self.draw_new_frame(): 
    9792 File
    9793 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9794 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9795 surface.update_clip_caps(view) 
    9796 File
    9797 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9798 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9799 p.update_direction(cpos) 
    9800 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9801  
    9802 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9803  
    9804 File
    9805 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9806 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9807 p.update_direction(cpos) 
    9808  
    9809 See log for complete Python traceback. 
    9810  
    9811 Traceback (most recent call last): 
    9812 File
    9813 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9814 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9815 if not self.draw_new_frame(): 
    9816 File
    9817 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9818 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9819 surface.update_clip_caps(view) 
    9820 File
    9821 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9822 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9823 p.update_direction(cpos) 
    9824 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9825  
    9826 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9827  
    9828 File
    9829 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9830 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9831 p.update_direction(cpos) 
    9832  
    9833 See log for complete Python traceback. 
    9834  
    9835 Traceback (most recent call last): 
    9836 File
    9837 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9838 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9839 if not self.draw_new_frame(): 
    9840 File
    9841 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9842 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9843 surface.update_clip_caps(view) 
    9844 File
    9845 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9846 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9847 p.update_direction(cpos) 
    9848 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9849  
    9850 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9851  
    9852 File
    9853 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9854 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9855 p.update_direction(cpos) 
    9856  
    9857 See log for complete Python traceback. 
    9858  
    9859 Traceback (most recent call last): 
    9860 File
    9861 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9862 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9863 if not self.draw_new_frame(): 
    9864 File
    9865 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9866 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9867 surface.update_clip_caps(view) 
    9868 File
    9869 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9870 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9871 p.update_direction(cpos) 
    9872 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9873  
    9874 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9875  
    9876 File
    9877 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9878 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9879 p.update_direction(cpos) 
    9880  
    9881 See log for complete Python traceback. 
    9882  
    9883 Traceback (most recent call last): 
    9884 File
    9885 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9886 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9887 if not self.draw_new_frame(): 
    9888 File
    9889 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9890 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9891 surface.update_clip_caps(view) 
    9892 File
    9893 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9894 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9895 p.update_direction(cpos) 
    9896 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9897  
    9898 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9899  
    9900 File
    9901 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9902 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9903 p.update_direction(cpos) 
    9904  
    9905 See log for complete Python traceback. 
    9906  
    9907 Traceback (most recent call last): 
    9908 File
    9909 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9910 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9911 if not self.draw_new_frame(): 
    9912 File
    9913 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9914 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9915 surface.update_clip_caps(view) 
    9916 File
    9917 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9918 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9919 p.update_direction(cpos) 
    9920 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9921  
    9922 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9923  
    9924 File
    9925 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9926 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9927 p.update_direction(cpos) 
    9928  
    9929 See log for complete Python traceback. 
    9930  
    9931 Traceback (most recent call last): 
    9932 File
    9933 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9934 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9935 if not self.draw_new_frame(): 
    9936 File
    9937 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9938 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9939 surface.update_clip_caps(view) 
    9940 File
    9941 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9942 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9943 p.update_direction(cpos) 
    9944 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9945  
    9946 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9947  
    9948 File
    9949 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9950 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9951 p.update_direction(cpos) 
    9952  
    9953 See log for complete Python traceback. 
    9954  
    9955 Traceback (most recent call last): 
    9956 File
    9957 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9958 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9959 if not self.draw_new_frame(): 
    9960 File
    9961 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9962 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9963 surface.update_clip_caps(view) 
    9964 File
    9965 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9966 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9967 p.update_direction(cpos) 
    9968 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9969  
    9970 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9971  
    9972 File
    9973 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9974 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9975 p.update_direction(cpos) 
    9976  
    9977 See log for complete Python traceback. 
    9978  
    9979 Traceback (most recent call last): 
    9980 File
    9981 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9982 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    9983 if not self.draw_new_frame(): 
    9984 File
    9985 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9986 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    9987 surface.update_clip_caps(view) 
    9988 File
    9989 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9990 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9991 p.update_direction(cpos) 
    9992 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9993  
    9994 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    9995  
    9996 File
    9997 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    9998 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    9999 p.update_direction(cpos) 
    10000  
    10001 See log for complete Python traceback. 
    10002  
    10003 Traceback (most recent call last): 
    10004 File
    10005 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10006 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10007 if not self.draw_new_frame(): 
    10008 File
    10009 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10010 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10011 surface.update_clip_caps(view) 
    10012 File
    10013 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10014 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10015 p.update_direction(cpos) 
    10016 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10017  
    10018 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10019  
    10020 File
    10021 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10022 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10023 p.update_direction(cpos) 
    10024  
    10025 See log for complete Python traceback. 
    10026  
    10027 Traceback (most recent call last): 
    10028 File
    10029 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10030 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10031 if not self.draw_new_frame(): 
    10032 File
    10033 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10034 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10035 surface.update_clip_caps(view) 
    10036 File
    10037 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10038 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10039 p.update_direction(cpos) 
    10040 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10041  
    10042 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10043  
    10044 File
    10045 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10046 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10047 p.update_direction(cpos) 
    10048  
    10049 See log for complete Python traceback. 
    10050  
    10051 Traceback (most recent call last): 
    10052 File
    10053 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10054 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10055 if not self.draw_new_frame(): 
    10056 File
    10057 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10058 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10059 surface.update_clip_caps(view) 
    10060 File
    10061 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10062 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10063 p.update_direction(cpos) 
    10064 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10065  
    10066 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10067  
    10068 File
    10069 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10070 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10071 p.update_direction(cpos) 
    10072  
    10073 See log for complete Python traceback. 
    10074  
    10075 Traceback (most recent call last): 
    10076 File
    10077 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10078 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10079 if not self.draw_new_frame(): 
    10080 File
    10081 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10082 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10083 surface.update_clip_caps(view) 
    10084 File
    10085 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10086 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10087 p.update_direction(cpos) 
    10088 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10089  
    10090 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10091  
    10092 File
    10093 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10094 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10095 p.update_direction(cpos) 
    10096  
    10097 See log for complete Python traceback. 
    10098  
    10099 Traceback (most recent call last): 
    10100 File
    10101 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10102 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10103 if not self.draw_new_frame(): 
    10104 File
    10105 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10106 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10107 surface.update_clip_caps(view) 
    10108 File
    10109 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10110 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10111 p.update_direction(cpos) 
    10112 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10113  
    10114 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10115  
    10116 File
    10117 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10118 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10119 p.update_direction(cpos) 
    10120  
    10121 See log for complete Python traceback. 
    10122  
    10123 Traceback (most recent call last): 
    10124 File
    10125 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10126 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10127 if not self.draw_new_frame(): 
    10128 File
    10129 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10130 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10131 surface.update_clip_caps(view) 
    10132 File
    10133 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10134 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10135 p.update_direction(cpos) 
    10136 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10137  
    10138 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10139  
    10140 File
    10141 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10142 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10143 p.update_direction(cpos) 
    10144  
    10145 See log for complete Python traceback. 
    10146  
    10147 Traceback (most recent call last): 
    10148 File
    10149 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10150 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10151 if not self.draw_new_frame(): 
    10152 File
    10153 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10154 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10155 surface.update_clip_caps(view) 
    10156 File
    10157 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10158 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10159 p.update_direction(cpos) 
    10160 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10161  
    10162 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10163  
    10164 File
    10165 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10166 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10167 p.update_direction(cpos) 
    10168  
    10169 See log for complete Python traceback. 
    10170  
    10171 Traceback (most recent call last): 
    10172 File
    10173 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10174 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10175 if not self.draw_new_frame(): 
    10176 File
    10177 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10178 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10179 surface.update_clip_caps(view) 
    10180 File
    10181 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10182 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10183 p.update_direction(cpos) 
    10184 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10185  
    10186 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10187  
    10188 File
    10189 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10190 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10191 p.update_direction(cpos) 
    10192  
    10193 See log for complete Python traceback. 
    10194  
    10195 Traceback (most recent call last): 
    10196 File
    10197 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10198 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10199 if not self.draw_new_frame(): 
    10200 File
    10201 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10202 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10203 surface.update_clip_caps(view) 
    10204 File
    10205 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10206 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10207 p.update_direction(cpos) 
    10208 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10209  
    10210 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10211  
    10212 File
    10213 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10214 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10215 p.update_direction(cpos) 
    10216  
    10217 See log for complete Python traceback. 
    10218  
    10219 Traceback (most recent call last): 
    10220 File
    10221 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10222 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10223 if not self.draw_new_frame(): 
    10224 File
    10225 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10226 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10227 surface.update_clip_caps(view) 
    10228 File
    10229 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10230 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10231 p.update_direction(cpos) 
    10232 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10233  
    10234 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10235  
    10236 File
    10237 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10238 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10239 p.update_direction(cpos) 
    10240  
    10241 See log for complete Python traceback. 
    10242  
    10243 Traceback (most recent call last): 
    10244 File
    10245 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10246 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10247 if not self.draw_new_frame(): 
    10248 File
    10249 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10250 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10251 surface.update_clip_caps(view) 
    10252 File
    10253 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10254 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10255 p.update_direction(cpos) 
    10256 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10257  
    10258 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10259  
    10260 File
    10261 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10262 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10263 p.update_direction(cpos) 
    10264  
    10265 See log for complete Python traceback. 
    10266  
    10267 Traceback (most recent call last): 
    10268 File
    10269 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10270 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10271 if not self.draw_new_frame(): 
    10272 File
    10273 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10274 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10275 surface.update_clip_caps(view) 
    10276 File
    10277 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10278 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10279 p.update_direction(cpos) 
    10280 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10281  
    10282 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10283  
    10284 File
    10285 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10286 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10287 p.update_direction(cpos) 
    10288  
    10289 See log for complete Python traceback. 
    10290  
    10291 Traceback (most recent call last): 
    10292 File
    10293 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10294 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10295 if not self.draw_new_frame(): 
    10296 File
    10297 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10298 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10299 surface.update_clip_caps(view) 
    10300 File
    10301 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10302 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10303 p.update_direction(cpos) 
    10304 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10305  
    10306 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10307  
    10308 File
    10309 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10310 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10311 p.update_direction(cpos) 
    10312  
    10313 See log for complete Python traceback. 
    10314  
    10315 Traceback (most recent call last): 
    10316 File
    10317 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10318 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10319 if not self.draw_new_frame(): 
    10320 File
    10321 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10322 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10323 surface.update_clip_caps(view) 
    10324 File
    10325 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10326 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10327 p.update_direction(cpos) 
    10328 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10329  
    10330 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10331  
    10332 File
    10333 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10334 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10335 p.update_direction(cpos) 
    10336  
    10337 See log for complete Python traceback. 
    10338  
    10339 Traceback (most recent call last): 
    10340 File
    10341 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10342 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10343 if not self.draw_new_frame(): 
    10344 File
    10345 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10346 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10347 surface.update_clip_caps(view) 
    10348 File
    10349 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10350 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10351 p.update_direction(cpos) 
    10352 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10353  
    10354 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10355  
    10356 File
    10357 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10358 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10359 p.update_direction(cpos) 
    10360  
    10361 See log for complete Python traceback. 
    10362  
    10363 Traceback (most recent call last): 
    10364 File
    10365 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10366 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10367 if not self.draw_new_frame(): 
    10368 File
    10369 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10370 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10371 surface.update_clip_caps(view) 
    10372 File
    10373 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10374 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10375 p.update_direction(cpos) 
    10376 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10377  
    10378 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10379  
    10380 File
    10381 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10382 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10383 p.update_direction(cpos) 
    10384  
    10385 See log for complete Python traceback. 
    10386  
    10387 Traceback (most recent call last): 
    10388 File
    10389 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10390 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10391 if not self.draw_new_frame(): 
    10392 File
    10393 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10394 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10395 surface.update_clip_caps(view) 
    10396 File
    10397 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10398 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10399 p.update_direction(cpos) 
    10400 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10401  
    10402 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10403  
    10404 File
    10405 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10406 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10407 p.update_direction(cpos) 
    10408  
    10409 See log for complete Python traceback. 
    10410  
    10411 Traceback (most recent call last): 
    10412 File
    10413 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10414 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10415 if not self.draw_new_frame(): 
    10416 File
    10417 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10418 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10419 surface.update_clip_caps(view) 
    10420 File
    10421 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10422 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10423 p.update_direction(cpos) 
    10424 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10425  
    10426 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10427  
    10428 File
    10429 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10430 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10431 p.update_direction(cpos) 
    10432  
    10433 See log for complete Python traceback. 
    10434  
    10435 Traceback (most recent call last): 
    10436 File
    10437 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10438 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10439 if not self.draw_new_frame(): 
    10440 File
    10441 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10442 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10443 surface.update_clip_caps(view) 
    10444 File
    10445 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10446 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10447 p.update_direction(cpos) 
    10448 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10449  
    10450 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10451  
    10452 File
    10453 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10454 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10455 p.update_direction(cpos) 
    10456  
    10457 See log for complete Python traceback. 
    10458  
    10459 Traceback (most recent call last): 
    10460 File
    10461 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10462 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10463 if not self.draw_new_frame(): 
    10464 File
    10465 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10466 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10467 surface.update_clip_caps(view) 
    10468 File
    10469 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10470 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10471 p.update_direction(cpos) 
    10472 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10473  
    10474 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10475  
    10476 File
    10477 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10478 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10479 p.update_direction(cpos) 
    10480  
    10481 See log for complete Python traceback. 
    10482  
    10483 Traceback (most recent call last): 
    10484 File
    10485 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10486 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10487 if not self.draw_new_frame(): 
    10488 File
    10489 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10490 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10491 surface.update_clip_caps(view) 
    10492 File
    10493 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10494 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10495 p.update_direction(cpos) 
    10496 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10497  
    10498 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10499  
    10500 File
    10501 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10502 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10503 p.update_direction(cpos) 
    10504  
    10505 See log for complete Python traceback. 
    10506  
    10507 Traceback (most recent call last): 
    10508 File
    10509 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10510 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10511 if not self.draw_new_frame(): 
    10512 File
    10513 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10514 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10515 surface.update_clip_caps(view) 
    10516 File
    10517 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10518 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10519 p.update_direction(cpos) 
    10520 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10521  
    10522 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10523  
    10524 File
    10525 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10526 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10527 p.update_direction(cpos) 
    10528  
    10529 See log for complete Python traceback. 
    10530  
    10531 Traceback (most recent call last): 
    10532 File
    10533 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10534 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10535 if not self.draw_new_frame(): 
    10536 File
    10537 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10538 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10539 surface.update_clip_caps(view) 
    10540 File
    10541 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10542 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10543 p.update_direction(cpos) 
    10544 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10545  
    10546 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10547  
    10548 File
    10549 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10550 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10551 p.update_direction(cpos) 
    10552  
    10553 See log for complete Python traceback. 
    10554  
    10555 Traceback (most recent call last): 
    10556 File
    10557 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10558 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10559 if not self.draw_new_frame(): 
    10560 File
    10561 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10562 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10563 surface.update_clip_caps(view) 
    10564 File
    10565 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10566 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10567 p.update_direction(cpos) 
    10568 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10569  
    10570 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10571  
    10572 File
    10573 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10574 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10575 p.update_direction(cpos) 
    10576  
    10577 See log for complete Python traceback. 
    10578  
    10579 Traceback (most recent call last): 
    10580 File
    10581 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10582 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10583 if not self.draw_new_frame(): 
    10584 File
    10585 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10586 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10587 surface.update_clip_caps(view) 
    10588 File
    10589 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10590 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10591 p.update_direction(cpos) 
    10592 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10593  
    10594 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10595  
    10596 File
    10597 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10598 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10599 p.update_direction(cpos) 
    10600  
    10601 See log for complete Python traceback. 
    10602  
    10603 Traceback (most recent call last): 
    10604 File
    10605 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10606 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10607 if not self.draw_new_frame(): 
    10608 File
    10609 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10610 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10611 surface.update_clip_caps(view) 
    10612 File
    10613 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10614 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10615 p.update_direction(cpos) 
    10616 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10617  
    10618 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10619  
    10620 File
    10621 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10622 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10623 p.update_direction(cpos) 
    10624  
    10625 See log for complete Python traceback. 
    10626  
    10627 Traceback (most recent call last): 
    10628 File
    10629 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10630 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10631 if not self.draw_new_frame(): 
    10632 File
    10633 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10634 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10635 surface.update_clip_caps(view) 
    10636 File
    10637 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10638 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10639 p.update_direction(cpos) 
    10640 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10641  
    10642 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10643  
    10644 File
    10645 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10646 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10647 p.update_direction(cpos) 
    10648  
    10649 See log for complete Python traceback. 
    10650  
    10651 Traceback (most recent call last): 
    10652 File
    10653 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10654 packages/chimerax/core/updateloop.py", line 128, in _redraw_timer_callback 
    10655 if not self.draw_new_frame(): 
    10656 File
    10657 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10658 packages/chimerax/core/updateloop.py", line 61, in draw_new_frame 
    10659 surface.update_clip_caps(view) 
    10660 File
    10661 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10662 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10663 p.update_direction(cpos) 
    10664 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10665  
    10666 AttributeError: 'NoneType' object has no attribute 'update_direction' 
    10667  
    10668 File
    10669 "/Applications/ChimeraX-0.9-rc-2019.05.23.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
    10670 packages/chimerax/surface/cap.py", line 20, in update_clip_caps 
    10671 p.update_direction(cpos) 
    10672  
    10673 See log for complete Python traceback. 
    10674  
     91
     92[deleted a _lot_ of these]
     93
    1067594Traceback (most recent call last): 
    1067695File