Can't save settings file (in use by another process)

[stephen.thong@…]

The following bug report has been submitted:
Platform:        Windows-10-10.0.18362
ChimeraX Version: 1.0rc202005130635 (2020-05-13 06:35:59 UTC)
Description
Model panel failed to start at first use.

Log:
Startup Messages  
---  
note | available bundle cache has not been initialized yet  
  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\safesave.py", line 96, in __exit__  
os.replace(self._tmp_filename, self.name)  
PermissionError: [WinError 32] The process cannot access the file because it
is being used by another process:
'C:\\\Users\\\stephen.thong\\\AppData\\\Local\\\UCSF\\\ChimeraX\\\ModelPanel-1.tmp'
->
'C:\\\Users\\\stephen.thong\\\AppData\\\Local\\\UCSF\\\ChimeraX\\\ModelPanel-1'  
  
During handling of the above exception, another exception occurred:  
  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\toolshed\info.py", line 621, in start_tool  
ti = api._api_caller.start_tool(api, session, self, tool_info)  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\toolshed\\__init__.py", line 1640, in start_tool  
return cls._get_func(api, "start_tool")(session, ti.name)  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\model_panel\\__init__.py", line 21, in start_tool  
return model_panel(session, tool_name)  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\model_panel\tool.py", line 345, in model_panel  
_mp = ModelPanel(session, tool_name)  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\model_panel\tool.py", line 29, in __init__  
now = self.settings.last_use = time()  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\settings.py", line 190, in __setattr__  
ConfigFile.__setattr__(self, name, value)  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\configfile.py", line 365, in __setattr__  
ConfigFile.save(self)  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\configfile.py", line 315, in save  
self._config.write(f)  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\safesave.py", line 98, in __exit__  
os.remove(self._tmp_filename)  
PermissionError: [WinError 32] The process cannot access the file because it
is being used by another process:
'C:\\\Users\\\stephen.thong\\\AppData\\\Local\\\UCSF\\\ChimeraX\\\ModelPanel-1.tmp'  
  
During handling of the above exception, another exception occurred:  
  
Traceback (most recent call last):  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\tools.py", line 379, in start_tools  
bi.start_tool(session, tool_name)  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\toolshed\info.py", line 627, in start_tool  
"start_tool() failed for tool %s in bundle %s:\n%s" % (tool_name, self.name,
str(e)))  
chimerax.core.toolshed.ToolshedError: start_tool() failed for tool Model Panel
in bundle ChimeraX-ModelPanel:  
[WinError 32] The process cannot access the file because it is being used by
another process:
'C:\\\Users\\\stephen.thong\\\AppData\\\Local\\\UCSF\\\ChimeraX\\\ModelPanel-1.tmp'  
  
Tool "Model Panel" failed to start:  
chimerax.core.toolshed.ToolshedError: start_tool() failed for tool Model Panel
in bundle ChimeraX-ModelPanel:  
[WinError 32] The process cannot access the file because it is being used by
another process:
'C:\\\Users\\\stephen.thong\\\AppData\\\Local\\\UCSF\\\ChimeraX\\\ModelPanel-1.tmp'  
  
File "C:\Program Files\ChimeraX 1.0rc202005130635\bin\lib\site-
packages\chimerax\core\toolshed\info.py", line 627, in start_tool  
"start_tool() failed for tool %s in bundle %s:\n%s" % (tool_name, self.name,
str(e)))  
  
See log for complete Python traceback.  
  
UCSF ChimeraX version: 1.0rc202005130635 (2020-05-13)  
© 2016-2020 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  




OpenGL version: 3.3.0 - Build 25.20.100.6472
OpenGL renderer: Intel(R) UHD Graphics 620
OpenGL vendor: Intel
Manufacturer: Microsoft Corporation
Model: Surface Book 2
OS: Microsoft Windows 10 Enterprise (Build 18363)
Memory: 17,101,139,968
MaxProcessMemory: 137,438,953,344
CPU: 8 Intel(R) Core(TM) i5-8350U CPU @ 1.70GHz"
PyQt version: 5.12.3
Compiled Qt version: 5.12.4
Runtime Qt version: 5.12.8

[pett]

Hi Stephen,

This only happened the very first time you started ChimeraX, is that right? Every other time it worked okay? I have gotten one other report of this, so despite the fact that it seems to only happen once and only on Windows, I have committed a change which is my best guess as to how to fix this. Thanks for reporting the problem.

--Eric

Eric Pettersen
UCSF Computer Graphics Lab