File→Open: unhashable type: 'set'

[chimerax-bug-report@…]

The following bug report has been submitted:
Platform:        Windows-10-10.0.17763
ChimeraX Version: 0.91 (2019-09-13)
Description
(Describe the actions that caused this problem to occur here)

Log:
UCSF ChimeraX version: 0.91 (2019-09-13)  
© 2016-2019 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  
Traceback (most recent call last):  
File "C:\ResearchTools\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 862, in <lambda>  
open_action.triggered.connect(lambda arg, s=self, sess=session:
s.file_open_cb(sess))  
File "C:\ResearchTools\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 571, in file_open_cb  
self.show_file_open_dialog(session)  
File "C:\ResearchTools\ChimeraX\bin\lib\site-packages\chimerax\ui\gui.py",
line 579, in show_file_open_dialog  
filters = open_file_filter(all=True, format_name=format_name)  
File "C:\ResearchTools\ChimeraX\bin\lib\site-
packages\chimerax\ui\open_save.py", line 137, in open_file_filter  
exts = combine.setdefault(fmt.category, [])  
TypeError: unhashable type: 'set'  
  
TypeError: unhashable type: 'set'  
  
File "C:\ResearchTools\ChimeraX\bin\lib\site-
packages\chimerax\ui\open_save.py", line 137, in open_file_filter  
exts = combine.setdefault(fmt.category, [])  
  
See log for complete Python traceback.  
  




OpenGL version: 3.3.0 - Build 23.20.16.4973
OpenGL renderer: Intel(R) HD Graphics 620
OpenGL vendor: Intel