Error showing VR tool window

[goddard@…]

The following bug report has been submitted:
Platform:        Windows-10-10.0.18362
ChimeraX Version: 0.92 (2020-02-15)
Description
Volume viewer panel shown by opening map from recent file history in VR, but maybe the image grab happened before the window was mapped leading to a zero size image.

Log:
Startup Messages  
---  
warning | 'clip' is a prefix of an existing command 'clipper'  
  
UCSF ChimeraX version: 0.92 (2020-02-15)  
© 2016-2020 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open 6bb5 format mmCIF fromDatabase pdb

6bb5 title:  
Human Oxy-Hemoglobin [more info...]  
  
Chain information for 6bb5 #1  
---  
Chain | Description  
A | Hemoglobin subunit α  
B | Hemoglobin subunit β  
  
Non-standard residues in 6bb5 #1  
---  
HEM — protoporphyrin IX containing Fe (HEME)  
OXY — oxygen molecule  
  
6bb5 mmCIF Assemblies  
---  
1| author_and_software_defined_assembly  
  
  

> vr true

started SteamVR rendering  

> toolshed show "Build Structure"

> vr false

> vr true

started SteamVR rendering  

> vr true

> open 20205 fromDatabase emdb

Opened emd_20205.map, grid size 98,112,104, pixel 1.07,1.07,1.07, shown at
level 0.287, step 1, values float32  
Traceback (most recent call last):  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\core\triggerset.py", line 130, in invoke  
return self._func(self._name, data)  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\vive\vr.py", line 693, in next_frame  
self.user_interface.update_if_needed()  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\vive\vr.py", line 1641, in update_if_needed  
self._update_ui_images()  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\vive\vr.py", line 1652, in _update_ui_images  
panel._update_image(rgba)  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\vive\vr.py", line 1818, in _update_image  
rgba = self._panel_image(main_window_rgba)  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\vive\vr.py", line 1891, in _panel_image  
rgba = self._widget_rgba()  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\vive\vr.py", line 1905, in _widget_rgba  
rgba = qimage_to_numpy(im)  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\core\graphics\drawing.py", line 2032, in qimage_to_numpy  
buf = qi.bits().asstring(qi.byteCount())  
AttributeError: 'NoneType' object has no attribute 'asstring'  
  
Error processing trigger "new frame":  
AttributeError: 'NoneType' object has no attribute 'asstring'  
  
File "C:\cygwin64\home\goddard\ucsf\chimerax\ChimeraX.app\bin\lib\site-
packages\chimerax\core\graphics\drawing.py", line 2032, in qimage_to_numpy  
buf = qi.bits().asstring(qi.byteCount())  
  
See log for complete Python traceback.  
  

> vr false




OpenGL version: 3.3.0 NVIDIA 442.19
OpenGL renderer: GeForce GTX 1080 Ti/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation

[Tom Goddard]

Fixed.

Log panel was squished to zero size by creation of Build Structure and Volume Viewer tool windows and the zero size led to an error refreshing the panel image.