ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'

[chimerax-bug-report@…]

The following bug report has been submitted:
Platform:        Windows-10-10.0.17134
ChimeraX Version: 0.91 (2019-09-20)
Description
(Describe the actions that caused this problem to occur here)

Log:
Startup Messages  
---  
warning | could not retrieve bundle list from toolshed  
note | available bundle cache has not been initialized yet  
  
UCSF ChimeraX version: 0.91 (2019-09-20)  
© 2016-2019 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 587, in _qt_safe  
from chimerax.core.commands import run, FileNameArg  
ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'
(C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\\__init__.py)  
  
ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'
(C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\\__init__.py)  
  
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 587, in _qt_safe  
from chimerax.core.commands import run, FileNameArg  
  
See log for complete Python traceback.  
  

> help help:quickstart

Traceback (most recent call last):  
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 587, in _qt_safe  
from chimerax.core.commands import run, FileNameArg  
ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'
(C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\\__init__.py)  
  
ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'
(C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\\__init__.py)  
  
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 587, in _qt_safe  
from chimerax.core.commands import run, FileNameArg  
  
See log for complete Python traceback.  
  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 587, in _qt_safe  
from chimerax.core.commands import run, FileNameArg  
ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'
(C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\\__init__.py)  
  
ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'
(C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\\__init__.py)  
  
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 587, in _qt_safe  
from chimerax.core.commands import run, FileNameArg  
  
See log for complete Python traceback.  
  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 587, in _qt_safe  
from chimerax.core.commands import run, FileNameArg  
ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'
(C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\\__init__.py)  
  
ImportError: cannot import name 'FileNameArg' from 'chimerax.core.commands'
(C:\Program Files\ChimeraX\bin\lib\site-
packages\chimerax\core\commands\\__init__.py)  
  
File "C:\Program Files\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 587, in _qt_safe  
from chimerax.core.commands import run, FileNameArg  
  
See log for complete Python traceback.  
  




OpenGL version: 3.3.0 NVIDIA 388.73
OpenGL renderer: GeForce GTX 1050/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation