Nucleotides: asking for distance from None

[mks131@…]

The following bug report has been submitted:
Platform:        Windows-10-10.0.18362
ChimeraX Version: 0.93 (2020-04-03)
Description
(Describe the actions that caused this problem to occur here)

Log:
UCSF ChimeraX version: 0.93 (2020-04-03)  
© 2016-2020 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open2 C:/Users/Manoj/Documents/phenix_lin28/DNA_alone_Lin28bsharp.mrc

Opened DNA_alone_Lin28bsharp.mrc, grid size 376,376,376, pixel 0.649, shown at
level 1.71, step 2, values float32  

> volume #1 level 3.934

> open2 C:/Users/Manoj/Documents/phenix_lin28/lin28b_DNA.pdb

Chain information for lin28b_DNA.pdb #2  
---  
Chain | Description  
I | No description available  
J | No description available  
  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\triggerset.py", line 130, in invoke  
return self._func(self._name, data)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\atomic\nucleotides\\_data.py", line 525, in rebuild  
_rebuild_molecule('internal', mol)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\atomic\nucleotides\\_data.py", line 652, in
_rebuild_molecule  
hide_residues = make_ladder(nd, residues, mol._ladder_params)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\atomic\nucleotides\\_data.py", line 1237, in make_ladder  
va, na, ta = get_cylinder(params.rung_radius, ep0, ep1)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\atomic\nucleotides\\_data.py", line 733, in get_cylinder  
h = distance(p0, p1)  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\geometry\vector.py", line 71, in distance  
return sqrt(distance_squared(p, q))  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\geometry\vector.py", line 63, in distance_squared  
if len(p) == 3:  
TypeError: object of type 'NoneType' has no len()  
  
Error processing trigger "new frame":  
TypeError: object of type 'NoneType' has no len()  
  
File "C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\geometry\vector.py", line 63, in distance_squared  
if len(p) == 3:  
  
See log for complete Python traceback.  
  




OpenGL version: 3.3.0 - Build 20.19.15.4531
OpenGL renderer: Intel(R) HD Graphics 5500
OpenGL vendor: Intel
Manufacturer: Dell Inc.
Model: Inspiron 7348
OS: Microsoft Windows 10 Home (Build 18362)
Memory: 8,501,149,696
MaxProcessMemory: 137,438,953,344
CPU: 4 Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz"

[Eric Pettersen]

(dup of #3535)

[Greg Couch]

Same solution as before. Update to ChimeraX 1.0 and this bug will go away.