Tool positioning: too many values to unpack

[chimerax-bug-report@…]

The following bug report has been submitted:
Platform:        Darwin-19.6.0-x86_64-i386-64bit
ChimeraX Version: 1.0 (2020-06-04 23:15:07 UTC)
Description
(Describe the actions that caused this problem to occur here)

Log:
Traceback (most recent call last):  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/toolshed/info.py", line 531, in start_tool  
ti = api._api_caller.start_tool(api, session, self, tool_info)  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/toolshed/__init__.py", line 1646, in start_tool  
return cls._get_func(api, "start_tool")(session, bi, ti)  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/toolbar/__init__.py", line 17, in start_tool  
return tool.get_toolbar_singleton(session)  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/toolbar/tool.py", line 64, in get_toolbar_singleton  
_tb = ToolbarTool(session, "Toolbar")  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/toolbar/tool.py", line 92, in __init__  
self._build_ui()  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/toolbar/tool.py", line 110, in _build_ui  
self.tool_window.manage(self.PLACEMENT)  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/ui/gui.py", line 1838, in manage  
version, placement, geom_info = settings.tool_positions['windows'][tool_name]  
ValueError: too many values to unpack (expected 3)  
  
During handling of the above exception, another exception occurred:  
  
Traceback (most recent call last):  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/tools.py", line 379, in start_tools  
bi.start_tool(session, tool_name)  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/toolshed/info.py", line 537, 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 Toolbar in
bundle ChimeraX-Toolbar:  
too many values to unpack (expected 3)  
  
Tool "Toolbar" failed to start:  
chimerax.core.toolshed.ToolshedError: start_tool() failed for tool Toolbar in
bundle ChimeraX-Toolbar:  
too many values to unpack (expected 3)  
  
File
"/private/var/folders/jw/w505drdj35z78mf4f59x06640000gn/T/AppTranslocation/BA93BAD5-4112-464D-8A0D-0149191E8207/d/ChimeraX-1.0.app/Contents/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-
packages/chimerax/core/toolshed/info.py", line 537, 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: 1.0 (2020-06-04)  
© 2016-2020 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  




OpenGL version: 4.1 INTEL-14.7.8
OpenGL renderer: Intel(R) Iris(TM) Plus Graphics 640
OpenGL vendor: Intel Inc.Hardware:

    Hardware Overview:

      Model Name: MacBook Pro
      Model Identifier: MacBookPro14,1
      Processor Name: Dual-Core Intel Core i5
      Processor Speed: 2,3 GHz
      Number of Processors: 1
      Total Number of Cores: 2
      L2 Cache (per Core): 256 KB
      L3 Cache: 4 MB
      Hyper-Threading Technology: Enabled
      Memory: 8 GB
      Boot ROM Version: 428.0.0.0.0
      SMC Version (system): 2.43f10

Software:

    System Software Overview:

      System Version: macOS 10.15.6 (19G73)
      Kernel Version: Darwin 19.6.0
      Time since boot: 36 days 7:19

Graphics/Displays:

    Intel Iris Plus Graphics 640:

      Chipset Model: Intel Iris Plus Graphics 640
      Type: GPU
      Bus: Built-In
      VRAM (Dynamic, Max): 1536 MB
      Vendor: Intel
      Device ID: 0x5926
      Revision ID: 0x0006
      Metal: Supported, feature set macOS GPUFamily2 v1
      Displays:
        Color LCD:
          Display Type: Built-In Retina LCD
          Resolution: 2560 x 1600 Retina
          Framebuffer Depth: 24-Bit Color (ARGB8888)
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Automatically Adjust Brightness: No
          Connection Type: Internal

PyQt version: 5.12.3
Compiled Qt version: 5.12.4
Runtime Qt version: 5.12.8

[Eric Pettersen]

User went back to using 1.0 after saving tool positions in 1.1 or later on the same machine.

[Tom Goddard]

Not sure I understand this correctly. I think it is quite important that a user be able to run ChimeraX 1.1 and then later run ChimeraX 1.0 and not have 1.1 preference settings cause errors in 1.0. New preferences should be added in a way that does not cause errors in older ChimeraX, typically by using new preference key names.

There must be some additional element of this bug since I routinely use ChimeraX daily, 1.1 and 1.0 and have not seen it. Maybe I would need to explicitly save tool positions.

[Eric Pettersen]

I agree, and will strive to not have this happen in the future, but the cow is out of the barn in this particular case. Yes, I think you have to explicitly set a tool position in 1.1 for this to occur in 1.0.