Boltz: process_chem_name() arg is None

[chimerax-bug-report@…]

The following bug report has been submitted:
Platform:        macOS-15.4.1-arm64-arm-64bit
ChimeraX Version: 1.10.dev202504240337 (2025-04-24 03:37:50 UTC)
Description
Replace this text with list of actions that caused this problem to occur

Log:
UCSF ChimeraX version: 1.10.dev202504240337 (2025-04-24)  
© 2016-2025 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open
> /Volumes/PFT7/Dropbox/PF/Postdoc/Science/MITOMICS2/C15orf61/AlphaFold3/ATPsynthase_monomer_250417/fold_atpsynthase_nof1_c15orf61_2025_04_17_17_43/fold_atpsynthase_nof1_c15orf61_2025_04_17_17_43_model_1.cif

Chain information for
fold_atpsynthase_nof1_c15orf61_2025_04_17_17_43_model_1.cif #1  
---  
Chain | Description  
A | .  
B | .  
C | .  
D | .  
E | .  
F | .  
G | .  
H | .  
I | .  
J | .  
K | .  
L | .  
M | .  
N | .  
O P Q R S T U V | .  
W | .  
  

> select /D:1-69

559 atoms, 567 bonds, 69 residues, 1 model selected  

> select /J:1-68

559 atoms, 580 bonds, 68 residues, 1 model selected  

> select /K:1-214

1736 atoms, 1771 bonds, 214 residues, 1 model selected  

> select /W:1-131

1075 atoms, 1113 bonds, 131 residues, 1 model selected  

> select /W:1-131

1075 atoms, 1113 bonds, 131 residues, 1 model selected  

> select /W:1-131

1075 atoms, 1113 bonds, 131 residues, 1 model selected  

> sequence chain #1/W

Alignment identifier is 1/W  
Computing secondary structure  

> select clear

> rainbow

[Repeated 1 time(s)]

> undo

[Repeated 1 time(s)]

> show surfaces

[Repeated 1 time(s)]

> hide surfaces

[Repeated 1 time(s)]

> show surfaces

[Repeated 1 time(s)]

> hide surfaces

> color bychain

> hide surfaces

> hide cartoons

> hide atoms

[Repeated 1 time(s)]

> show atoms

> style sphere

Changed 19426 atom styles  

> show surfaces

> hide atoms

> hide cartoons

> hide surfaces

> show surfaces

> hide surfaces

> show atoms

> nucleotides fill

> style nucleic stick

Changed 0 atom styles  

> show cartoons

> hide atoms

> open "/Volumes/PFT7/Dropbox/PF/Postdoc/Science/MITOMICS2/C15orf61/ATP
> synthase/8h9s-pdb-bundle/8h9s-pdb-bundle1.pdb"

Summary of feedback from opening
/Volumes/PFT7/Dropbox/PF/Postdoc/Science/MITOMICS2/C15orf61/ATP
synthase/8h9s-pdb-bundle/8h9s-pdb-bundle1.pdb  
---  
warning | Ignored bad PDB record found on line 1  
HEADER MEMBRANE PROTEIN 2022-10-25 XXXX  
  
Chain information for 8h9s-pdb-bundle1.pdb #2  
---  
Chain | Description  
1 2 3 4 5 6 7 8 | No description available  
A | No description available  
B | No description available  
C | No description available  
D | No description available  
E | No description available  
F | No description available  
G | No description available  
H | No description available  
I | No description available  
J | No description available  
K | No description available  
L | No description available  
M | No description available  
N | No description available  
O | No description available  
P | No description available  
Q | No description available  
R | No description available  
S | No description available  
T | No description available  
  
16 atoms have alternate locations. Control/examine alternate locations with
Altloc Explorer [start tool...] or the altlocs command.  
Drag select of 38914 atoms, 5 pseudobonds, 302 bonds  

> select clear

> hide #!2 models

> show #!2 models

> ui tool show "Selection Inspector"

> select add #2

38914 atoms, 39547 bonds, 5 pseudobonds, 5077 residues, 2 models selected  
Drag select of 2423 atoms, 2 pseudobonds, 31 bonds  

> select add #2

38914 atoms, 39547 bonds, 5 pseudobonds, 5077 residues, 2 models selected  

> select subtract #2

Nothing selected  

> select add #2

38914 atoms, 39547 bonds, 5 pseudobonds, 5077 residues, 2 models selected  

> ui mousemode right "move picked models"

> view matrix models #2,1,0,0,-146,0,1,0,-193.81,0,0,1,48.836

> ui mousemode right "translate selected models"

> view matrix models #2,1,0,0,-254.2,0,1,0,-92.756,0,0,1,-398.34

> show sel cartoons

Computing secondary structure  

> hide sel atoms

> color sel bychain

> ui mousemode right "rotate selected models"

> view matrix models
> #2,0.26365,-0.94663,0.18543,26.364,-0.41106,0.06365,0.90939,-9.6973,-0.87265,-0.31598,-0.37234,79.478

> view matrix models
> #2,-0.25467,0.96576,-0.049461,-184.08,0.32991,0.038693,-0.94322,195.72,-0.90901,-0.25653,-0.32847,67.348

> view matrix models
> #2,-0.069739,0.81491,-0.57537,-94.42,0.35365,-0.51912,-0.77811,263.55,-0.93278,-0.25774,-0.25199,57.981

> view matrix models
> #2,-0.070997,0.8144,-0.57595,-93.979,0.35489,-0.519,-0.77762,263.2,-0.93221,-0.25961,-0.25218,58.251

> view matrix models
> #2,-0.27361,0.62319,-0.73265,8.7969,0.58227,-0.49896,-0.64187,191.13,-0.76557,-0.60222,-0.22634,84.897

> ui mousemode right "move picked models"

> view matrix models
> #2,-0.27361,0.62319,-0.73265,34.574,0.58227,-0.49896,-0.64187,185.59,-0.76557,-0.60222,-0.22634,143.62

> ui mousemode right select

> select clear

> ui mousemode right "rotate selected models"

> ui mousemode right "move picked models"

> ui mousemode right select

Drag select of 2514 residues  

> ui mousemode right "rotate selected models"

> view matrix models
> #1,0.74979,0.010029,0.6616,12.315,0.59406,0.43013,-0.67977,-20.111,-0.29139,0.90271,0.31655,-0.55178

> view matrix models
> #1,0.67882,0.029586,0.73371,14.378,0.63826,0.47027,-0.60948,-19.657,-0.36308,0.88202,0.30035,0.18847

> view matrix models
> #1,0.75259,-0.093701,0.65179,11.675,0.52674,0.67966,-0.51049,-15.789,-0.39517,0.72751,0.56086,3.3484

> ui mousemode right select

Drag select of 5064 residues, 5 pseudobonds  

> ui mousemode right "rotate selected models"

> view matrix models
> #2,-0.37394,0.43852,-0.81724,103.34,0.74872,-0.37729,-0.54504,113.57,-0.54734,-0.81569,-0.18724,134.18

> ui mousemode right select

> select clear

[Repeated 1 time(s)]Drag select of 26 residues  

> select clear

Drag select of 419 residues  

> select clear

Drag select of 128 residues  

> select clear

Drag select of 107 residues  

> select clear

Drag select of 104 residues  
Drag select of 38 residues  

> select clear

> hide #1.23 models

> show #1.23 models

> hide #1.23 models

> show #1.23 models

> hide #!1 models

> show #!1 models

> hide #1.1 models

> show #1.1 models

> hide #1.23 models

> show #1.23 models

> hide #!2 models

> show #!2 models

> select /K:1-214

3309 atoms, 3376 bonds, 1 pseudobond, 412 residues, 3 models selected  

> select /M:1-76

1194 atoms, 1221 bonds, 148 residues, 2 models selected  

> select /N:1-190

2893 atoms, 2942 bonds, 377 residues, 2 models selected  

> select /G:1-58

923 atoms, 940 bonds, 115 residues, 2 models selected  

> select /A:1-273

4132 atoms, 4178 bonds, 1 pseudobond, 540 residues, 3 models selected  

> select /B:1-146

1970 atoms, 1992 bonds, 269 residues, 2 models selected  

> select /N:1-190

2893 atoms, 2942 bonds, 377 residues, 2 models selected  

> select /M:1-76

1194 atoms, 1221 bonds, 148 residues, 2 models selected  

> select clear

> select #1/W:13

10 atoms, 10 bonds, 1 residue, 1 model selected  

> select #1/W:13-14

18 atoms, 18 bonds, 2 residues, 1 model selected  

> select #1/W:2

7 atoms, 7 bonds, 1 residue, 1 model selected  

> select #1/W:2-115

931 atoms, 965 bonds, 114 residues, 1 model selected  

> select #1/W:1

11 atoms, 10 bonds, 1 residue, 1 model selected  

> select #1/W:1

11 atoms, 10 bonds, 1 residue, 1 model selected  

> select #1/W:9

7 atoms, 6 bonds, 1 residue, 1 model selected  

> select #1/W:9-10

15 atoms, 14 bonds, 2 residues, 1 model selected  

> select #1/W:6-16,75-87,91-103

302 atoms, 307 bonds, 37 residues, 1 model selected  

> select #1/W:3

9 atoms, 8 bonds, 1 residue, 1 model selected  

> select #1/W:3

9 atoms, 8 bonds, 1 residue, 1 model selected  

> select #2/I:33

5 atoms, 4 bonds, 1 residue, 1 model selected  

> select clear

> select #2/Q:1-51

422 atoms, 437 bonds, 51 residues, 1 model selected  

> select #2/S:26-102

605 atoms, 619 bonds, 77 residues, 1 model selected  

> select #2/T:2-45

346 atoms, 354 bonds, 44 residues, 1 model selected  

> select #2/H:15-146

975 atoms, 987 bonds, 132 residues, 1 model selected  

> select #2/I:2-46

354 atoms, 359 bonds, 45 residues, 1 model selected  

> sequence chain #2/I

Alignment identifier is 2/I  

> select #2/I:8

5 atoms, 4 bonds, 1 residue, 1 model selected  

> select #2/I:8-16

72 atoms, 73 bonds, 9 residues, 1 model selected  

> select #2/I:23

7 atoms, 6 bonds, 1 residue, 1 model selected  

> select #2/I:13-23

86 atoms, 86 bonds, 11 residues, 1 model selected  

> select #2/I:18-19

14 atoms, 13 bonds, 2 residues, 1 model selected  

> select #2/I:18-20

19 atoms, 18 bonds, 3 residues, 1 model selected  

> select #2/I:24-25

19 atoms, 18 bonds, 2 residues, 1 model selected  

> select #2/I:24-25

19 atoms, 18 bonds, 2 residues, 1 model selected  

> select #2/I:15

12 atoms, 12 bonds, 1 residue, 1 model selected  

> select #2/I:15

12 atoms, 12 bonds, 1 residue, 1 model selected  

> select #2/I:20

5 atoms, 4 bonds, 1 residue, 1 model selected  

> select #2/I:20-21

14 atoms, 13 bonds, 2 residues, 1 model selected  

> select #2/I:4-7,12-25,29-38

242 atoms, 245 bonds, 28 residues, 1 model selected  

> select #2/I:21

9 atoms, 8 bonds, 1 residue, 1 model selected  

> select #2/I:21-22

14 atoms, 13 bonds, 2 residues, 1 model selected  

> select #2/I:21

9 atoms, 8 bonds, 1 residue, 1 model selected  

> select #2/I:21

9 atoms, 8 bonds, 1 residue, 1 model selected  

> ui tool show Boltz

Traceback (most recent call last):  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/toolshed/info.py", line 571, in start_tool  
ti = api._api_caller.start_tool(api, session, self, tool_info)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/toolshed/__init__.py", line 1399, in start_tool  
return cls._get_func(api, "start_tool")(session, ti.name)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/__init__.py", line 33, in start_tool  
return boltz_gui.show_boltz_panel(session)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 965, in show_boltz_panel  
return boltz_panel(session, create = True)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 960, in boltz_panel  
return BoltzPredictionGUI.get_singleton(session, create=create)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 104, in get_singleton  
return tools.get_singleton(session, cls, 'Boltz', create=create)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/tools.py", line 216, in get_singleton  
tinst = tool_class(session, tool_name, **kw)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 67, in __init__  
sm = self._create_molecule_menu(parent)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 144, in _create_molecule_menu  
entries = self._update_molecule_menu()  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 242, in _update_molecule_menu  
entries = self._menu_entries()  
^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 255, in _menu_entries  
values.extend(_specifiers_with_descriptions(s))  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 794, in
_specifiers_with_descriptions  
values.extend(_chain_descriptions(structure))  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 816, in _chain_descriptions  
desc = _chain_description(c)  
^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/boltz/boltz_gui.py", line 805, in _chain_description  
chain_desc = process_chem_name(desc)  
^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/pdb/pdb.py", line 447, in process_chem_name  
if name.isupper() and (" " in name or len(name) > 5):  
^^^^^^^^^^^^  
AttributeError: 'NoneType' object has no attribute 'isupper'  
  
During handling of the above exception, another exception occurred:  
  
Traceback (most recent call last):  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/ui/gui.py", line 1891, in <lambda>  
run(ses, "ui tool show %s" % StringArg.unparse(tool_name)))  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/commands/run.py", line 49, in run  
results = command.run(text, log=log, return_json=return_json)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/commands/cli.py", line 3219, in run  
result = ci.function(session, **kw_args)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/ui/cmd.py", line 219, in ui_tool_show  
return bi.start_tool(session, name)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/toolshed/info.py", line 578, in start_tool  
raise ToolshedError(  
chimerax.core.toolshed.ToolshedError: start_tool() failed for tool Boltz in
bundle ChimeraX-Boltz:  
'NoneType' object has no attribute 'isupper'  
  
chimerax.core.toolshed.ToolshedError: start_tool() failed for tool Boltz in
bundle ChimeraX-Boltz:  
'NoneType' object has no attribute 'isupper'  
  
File
"/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/toolshed/info.py", line 578, in start_tool  
raise ToolshedError(  
  
See log for complete Python traceback.  
  




OpenGL version: 4.1 Metal - 89.4
OpenGL renderer: Apple M4
OpenGL vendor: Apple

Python: 3.11.4
Locale: en_US.UTF-8
Qt version: PyQt6 6.8.1, Qt 6.8.2
Qt runtime version: 6.8.2
Qt platform: cocoa
Hardware:

    Hardware Overview:

      Model Name: Mac mini
      Model Identifier: Mac16,10
      Model Number: MU9D3LL/A
      Chip: Apple M4
      Total Number of Cores: 10 (4 performance and 6 efficiency)
      Memory: 16 GB
      System Firmware Version: 11881.101.1
      OS Loader Version: 11881.101.1

Software:

    System Software Overview:

      System Version: macOS 15.4.1 (24E263)
      Kernel Version: Darwin 24.4.0
      Time since boot: 7 days, 21 hours, 32 minutes

Graphics/Displays:

    Apple M4:

      Chipset Model: Apple M4
      Type: GPU
      Bus: Built-In
      Total Number of Cores: 10
      Vendor: Apple (0x106b)
      Metal Support: Metal 3
      Displays:
        LG HDR 4K:
          Resolution: 3840 x 2160 (2160p/4K UHD 1 - Ultra High Definition)
          UI Looks like: 1920 x 1080 @ 60.00Hz
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Rotation: Supported


Installed Packages:
    alabaster: 1.0.0
    appdirs: 1.4.4
    appnope: 0.1.4
    asttokens: 3.0.0
    auditwheel: 6.3.0
    babel: 2.17.0
    beautifulsoup4: 4.13.3
    blockdiag: 3.0.0
    blosc2: 3.3.1
    build: 1.2.2.post1
    certifi: 2023.11.17
    cftime: 1.6.4.post1
    charset-normalizer: 3.4.1
    ChimeraX-AddCharge: 1.5.18
    ChimeraX-AddH: 2.2.7
    ChimeraX-AlignmentAlgorithms: 2.0.2
    ChimeraX-AlignmentHdrs: 3.6.1
    ChimeraX-AlignmentMatrices: 2.1
    ChimeraX-Alignments: 2.20
    ChimeraX-AlphaFold: 1.0.1
    ChimeraX-AltlocExplorer: 1.1.2
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Aniso: 1.1.3
    ChimeraX-Arrays: 1.1
    ChimeraX-Atomic: 1.60.5
    ChimeraX-AtomicLibrary: 14.1.15
    ChimeraX-AtomSearch: 2.0.1
    ChimeraX-AxesPlanes: 2.4
    ChimeraX-BasicActions: 1.1.3
    ChimeraX-BILD: 1.0
    ChimeraX-BlastProtein: 3.0.0
    ChimeraX-Boltz: 1.0
    ChimeraX-BondRot: 2.0.4
    ChimeraX-BugReporter: 1.0.2
    ChimeraX-BuildStructure: 2.13.1
    ChimeraX-Bumps: 1.0
    ChimeraX-BundleBuilder: 1.4.0
    ChimeraX-ButtonPanel: 1.0.1
    ChimeraX-CageBuilder: 1.0.1
    ChimeraX-CellPack: 1.0
    ChimeraX-Centroids: 1.4
    ChimeraX-ChangeChains: 1.1
    ChimeraX-CheckWaters: 1.4
    ChimeraX-ChemGroup: 2.0.2
    ChimeraX-Clashes: 2.3
    ChimeraX-ColorActions: 1.0.5
    ChimeraX-ColorGlobe: 1.0
    ChimeraX-ColorKey: 1.5.8
    ChimeraX-CommandLine: 1.2.5
    ChimeraX-ConnectStructure: 2.0.1
    ChimeraX-Contacts: 1.0.1
    ChimeraX-Core: 1.10.dev202504240337
    ChimeraX-CoreFormats: 1.2
    ChimeraX-coulombic: 1.4.5
    ChimeraX-Crosslinks: 1.0
    ChimeraX-Crystal: 1.0
    ChimeraX-CrystalContacts: 1.0.1
    ChimeraX-DataFormats: 1.2.4
    ChimeraX-Dicom: 1.2.7
    ChimeraX-DistMonitor: 1.4.2
    ChimeraX-DockPrep: 1.1.4
    ChimeraX-Dssp: 2.0
    ChimeraX-EMDB-SFF: 1.0
    ChimeraX-ESMFold: 1.0
    ChimeraX-FileHistory: 1.0.1
    ChimeraX-FunctionKey: 1.0.1
    ChimeraX-Geometry: 1.3
    ChimeraX-gltf: 1.0
    ChimeraX-Graphics: 1.4.1
    ChimeraX-Hbonds: 2.5.1
    ChimeraX-Help: 1.3
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.3
    ChimeraX-ItemsInspection: 1.0.1
    ChimeraX-IUPAC: 1.0
    ChimeraX-KVFinder: 1.6.1
    ChimeraX-Label: 1.1.14
    ChimeraX-ListInfo: 1.2.2
    ChimeraX-Log: 1.2
    ChimeraX-LookingGlass: 1.1
    ChimeraX-Maestro: 1.9.1
    ChimeraX-Map: 1.3
    ChimeraX-MapData: 2.0
    ChimeraX-MapEraser: 1.0.1
    ChimeraX-MapFilter: 2.0.1
    ChimeraX-MapFit: 2.0
    ChimeraX-MapSeries: 2.1.1
    ChimeraX-Markers: 1.0.1
    ChimeraX-Mask: 1.0.2
    ChimeraX-MatchMaker: 2.2.1
    ChimeraX-MCopy: 1.0
    ChimeraX-MDcrds: 2.10.1
    ChimeraX-MedicalToolbar: 1.1
    ChimeraX-Meeting: 1.0.1
    ChimeraX-MLP: 1.1.1
    ChimeraX-mmCIF: 2.16
    ChimeraX-MMTF: 2.2
    ChimeraX-ModelArchive: 1.0
    ChimeraX-Modeller: 1.5.19
    ChimeraX-ModelPanel: 1.5.1
    ChimeraX-ModelSeries: 1.0.1
    ChimeraX-Mol2: 2.0.3
    ChimeraX-Mole: 1.0
    ChimeraX-Morph: 1.0.2
    ChimeraX-MouseModes: 1.2
    ChimeraX-Movie: 1.0
    ChimeraX-MutationScores: 1.0
    ChimeraX-Neuron: 1.0
    ChimeraX-Nifti: 1.2
    ChimeraX-NMRSTAR: 1.0.2
    ChimeraX-NRRD: 1.2
    ChimeraX-Nucleotides: 2.0.3
    ChimeraX-OpenCommand: 1.14.1
    ChimeraX-OrthoPick: 1.0.1
    ChimeraX-PDB: 2.7.9
    ChimeraX-PDBBio: 1.0.1
    ChimeraX-PDBLibrary: 1.0.4
    ChimeraX-PDBMatrices: 1.0
    ChimeraX-PickBlobs: 1.0.1
    ChimeraX-Positions: 1.0
    ChimeraX-PresetMgr: 1.1.3
    ChimeraX-ProfileGrids: 1.1.1
    ChimeraX-PubChem: 2.2
    ChimeraX-ReadPbonds: 1.0.1
    ChimeraX-Registration: 1.1.2
    ChimeraX-RemoteControl: 1.0
    ChimeraX-RenderByAttr: 1.6.3
    ChimeraX-RenumberResidues: 1.1
    ChimeraX-ResidueFit: 1.0.1
    ChimeraX-RestServer: 1.3.1
    ChimeraX-RNALayout: 1.0
    ChimeraX-RotamerLibMgr: 4.0
    ChimeraX-RotamerLibsDunbrack: 2.0
    ChimeraX-RotamerLibsDynameomics: 2.0
    ChimeraX-RotamerLibsRichardson: 2.0
    ChimeraX-SaveCommand: 1.5.1
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0.3
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0.1
    ChimeraX-Segmentations: 3.5.7
    ChimeraX-SelInspector: 1.0
    ChimeraX-SeqView: 2.17.1
    ChimeraX-Shape: 1.1
    ChimeraX-Shell: 1.0.1
    ChimeraX-Shortcuts: 1.2.0
    ChimeraX-ShowSequences: 1.0.3
    ChimeraX-SideView: 1.0.1
    ChimeraX-SimilarStructures: 1.0.1
    ChimeraX-Smiles: 2.1.2
    ChimeraX-SmoothLines: 1.0
    ChimeraX-SpaceNavigator: 1.0
    ChimeraX-StdCommands: 1.19.1
    ChimeraX-STL: 1.0.1
    ChimeraX-Storm: 1.0
    ChimeraX-StructMeasure: 1.2.1
    ChimeraX-Struts: 1.0.1
    ChimeraX-Surface: 1.0.1
    ChimeraX-SwapAA: 2.0.1
    ChimeraX-SwapRes: 2.5.2
    ChimeraX-TapeMeasure: 1.0
    ChimeraX-TaskManager: 1.0
    ChimeraX-Test: 1.0
    ChimeraX-Toolbar: 1.2.3
    ChimeraX-ToolshedUtils: 1.2.4
    ChimeraX-Topography: 1.0
    ChimeraX-ToQuest: 1.0
    ChimeraX-Tug: 1.0.1
    ChimeraX-UI: 1.45.1
    ChimeraX-Umap: 1.0
    ChimeraX-uniprot: 2.3.1
    ChimeraX-UnitCell: 1.0.1
    ChimeraX-ViewDockX: 1.4.4
    ChimeraX-VIPERdb: 1.0
    ChimeraX-Vive: 1.1
    ChimeraX-VolumeMenu: 1.0.1
    ChimeraX-vrml: 1.0
    ChimeraX-VTK: 1.0
    ChimeraX-WavefrontOBJ: 1.0
    ChimeraX-WebCam: 1.0.2
    ChimeraX-WebServices: 1.1.4
    ChimeraX-Zone: 1.0.1
    colorama: 0.4.6
    comm: 0.2.2
    contourpy: 1.3.2
    coverage: 7.8.0
    cxservices: 1.2.3
    cycler: 0.12.1
    Cython: 3.0.12
    debugpy: 1.8.14
    decorator: 5.2.1
    docutils: 0.21.2
    executing: 2.2.0
    filelock: 3.18.0
    fonttools: 4.57.0
    funcparserlib: 2.0.0a0
    glfw: 2.9.0
    grako: 3.16.5
    h5py: 3.13.0
    html2text: 2024.2.26
    idna: 3.10
    ihm: 2.2
    imagecodecs: 2024.6.1
    imagesize: 1.4.1
    iniconfig: 2.1.0
    ipykernel: 6.29.5
    ipython: 8.26.0
    ipywidgets: 8.1.6
    jedi: 0.19.1
    Jinja2: 3.1.6
    jupyter_client: 8.6.3
    jupyter_core: 5.7.2
    jupyterlab_widgets: 3.0.14
    kiwisolver: 1.4.8
    line_profiler: 4.2.0
    lxml: 5.3.1
    lz4: 4.4.4
    MarkupSafe: 3.0.2
    matplotlib: 3.10.1
    matplotlib-inline: 0.1.7
    msgpack: 1.1.0
    ndindex: 1.9.2
    nest-asyncio: 1.6.0
    netCDF4: 1.6.5
    networkx: 3.3
    nibabel: 5.2.0
    nptyping: 2.5.0
    numexpr: 2.10.2
    numpy: 1.26.4
    OpenMM: 8.2.0
    openvr: 1.26.701
    packaging: 24.2
    ParmEd: 4.2.2
    parso: 0.8.4
    pep517: 0.13.1
    pexpect: 4.9.0
    pickleshare: 0.7.5
    pillow: 10.4.0
    pip: 25.0.1
    pkginfo: 1.11.1
    platformdirs: 4.3.7
    pluggy: 1.5.0
    prompt_toolkit: 3.0.51
    psutil: 7.0.0
    ptyprocess: 0.7.0
    pure_eval: 0.2.3
    py-cpuinfo: 9.0.0
    pycollada: 0.8
    pydicom: 2.4.4
    pyelftools: 0.32
    Pygments: 2.18.0
    pynmrstar: 3.3.5
    pynrrd: 1.0.0
    PyOpenGL: 3.1.9
    PyOpenGL-accelerate: 3.1.9
    pyopenxr: 1.1.4501
    pyparsing: 3.2.3
    pyproject_hooks: 1.2.0
    PyQt6-commercial: 6.8.1
    PyQt6-Qt6: 6.8.2
    PyQt6-WebEngine-commercial: 6.8.0
    PyQt6-WebEngine-Qt6: 6.8.2
    PyQt6_sip: 13.10.0
    pytest: 8.3.5
    pytest-cov: 6.1.1
    python-dateutil: 2.9.0.post0
    pytz: 2025.2
    pyzmq: 26.4.0
    qtconsole: 5.5.2
    QtPy: 2.4.3
    qtshim: 1.1
    RandomWords: 0.4.0
    requests: 2.32.3
    roman-numerals-py: 3.1.0
    scipy: 1.14.0
    setuptools: 78.1.0
    sfftk-rw: 0.8.1
    six: 1.16.0
    snowballstemmer: 2.2.0
    sortedcontainers: 2.4.0
    soupsieve: 2.7
    Sphinx: 8.2.3
    sphinx-autodoc-typehints: 3.1.0
    sphinxcontrib-applehelp: 2.0.0
    sphinxcontrib-blockdiag: 3.0.0
    sphinxcontrib-devhelp: 2.0.0
    sphinxcontrib-htmlhelp: 2.1.0
    sphinxcontrib-jsmath: 1.0.1
    sphinxcontrib-qthelp: 2.0.0
    sphinxcontrib-serializinghtml: 2.0.0
    stack-data: 0.6.3
    superqt: 0.7.1
    tables: 3.10.2
    tcia_utils: 1.5.1
    tifffile: 2025.3.13
    tinyarray: 1.2.4
    tornado: 6.4.2
    traitlets: 5.14.3
    typing_extensions: 4.13.2
    tzdata: 2025.2
    urllib3: 2.4.0
    wcwidth: 0.2.13
    webcolors: 24.11.1
    wheel: 0.45.1
    wheel-filename: 1.4.2
    widgetsnbextension: 4.0.14

[Tom Goddard]

Fixed.

Showing Boltz gui with PDB file opened that has no chain descriptions gives this error because chain.description is None. With mmCIF files the missing chain description is or '.'.