Arrows save in sessions, but not if in scenes

[Elaine Meng]

The following bug report has been submitted:
Platform:        macOS-15.6.1-arm64-arm-64bit
ChimeraX Version: 1.11.dev202510150607 (2025-10-15 06:07:07 UTC)
Description
tried to save a session with two scenes, one with arrow shown and another with arrow model hidden

Log:
UCSF ChimeraX version: 1.11.dev202510150607 (2025-10-15)  
© 2016-2025 Regents of the University of California. All rights reserved.  

> open /Users/meng/Desktop/testlab.cxs format session

Updated animation length to 0:05.00  
[Repeated 1 time(s)]Log from Wed Oct 15 12:06:30 2025 Startup Messages  
---  
note | Updated animation length to 0:05.00  
  

> open /Users/meng/Desktop/startup.cxc

> alias reset view orient; view initial

> alias start tool show $1

> alias whereprefs info path user unversioned config

> alias captut open help:user/tutorials/binding-sites.html#cap-example

> alias previewts toolshed url https://cxtoolshed-
> preview.rbvi.ucsf.edu;toolshed reload available

> alias normalts toolshed url https://cxtoolshed.rbvi.ucsf.edu;toolshed reload
> available

> alias btut open
> https://www.cgl.ucsf.edu/home/meng/chimerax/vdocs/user/tutorials/binding-
> sites.html; ui dockable false "Help Viewer"

> alias stut open https://www.rbvi.ucsf.edu/chimerax/data/conservation-
> coloring/conservation-coloring.html; ui dockable false "Help Viewer"

> alias ltut open https://www.rbvi.ucsf.edu/chimerax/data/loop-modeling/loop-
> modeling.html; ui dockable false "Help Viewer"

> alias mtut open https://www.rbvi.ucsf.edu/chimerax/data/mole-channel/mole-
> channel.html; ui dockable false "Help Viewer"; windowsize 600 800

executed startup.cxc  
UCSF ChimeraX version: 1.11.dev202510150607 (2025-10-15)  
© 2016-2025 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open testlab.cxc

> open 1bfp

1bfp title:  
Blue variant of green fluorescent protein [more info...]  
  
Chain information for 1bfp #1  
---  
Chain | Description | UniProt  
A | BLUE FLUORESCENT PROTEIN | GFP_AEQVI 1-238  
  
Non-standard residues in 1bfp #1  
---  
IIC — 4-imidazolmethylene-5-imidazolone chromophore  
  

> turn z 90

> turn y 10

> preset publication 1

Using preset: Overall Look / Publication 1 (Silhouettes)  
Preset expands to these ChimeraX commands:

    
    
    set bg white
    graphics silhouettes t
    lighting depthCue f

  

> windowsize 600 400

> 2dlabels text "Blue Fluorescent Protein" color light sea green size 26 xpos
> .03 ypos .92

> wait 60

> 2dlabels #2 ypos .03 size 40 frames 60

> wait 120

> 2dlabels #2 text "here's an arrow"

> 2dlabels arrow start .5,.075 end .9,.2 color red

> wait 120

> 2dlabels #2 text Fading... visibility false frames 100

> 2dlabels arrow #3 visibility false frames 100

> wait 100

executed testlab.cxc  

> show #2.1 models

> show #3.1 models

> save testlab.cxs

——— End of log from Wed Oct 15 12:06:30 2025 ———

> view name session-start

opened ChimeraX session  

> ui tool show Scenes

> scenes save ""

> hide #!3 models

> hide #!2 models

> scenes save ""

> scenes restore 1

> scenes restore 2

> scenes restore 1

> scenes restore 2

> save twoscenes.cxs

Traceback (most recent call last):  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 297, in discovery  
self.processed[key] = self.process(obj, parents)  
^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 341, in process  
return copy_state(data, convert=convert)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 232, in copy_state  
return _copy(data)  
^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in _copy  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in <listcomp>  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 226, in _copy  
items = [_copy(o) for o in data]  
^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 226, in <listcomp>  
items = [_copy(o) for o in data]  
^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in _copy  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in <listcomp>  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in _copy  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in <listcomp>  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 230, in _copy  
return convert(data)  
^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 339, in convert  
return add_obj(obj, parents)  
^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 307, in _add_obj  
uid = self.unique_name.from_obj(self.session, obj)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 176, in from_obj  
raise RuntimeError(  
RuntimeError: Unable to restore objects of ArrowModel class in ChimeraX-Label
bundle because the class name is not listed in the name to class table for
session restore  
  
During handling of the above exception, another exception occurred:  
  
Traceback (most recent call last):  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 1048, in save  
session.save(output, version=version, include_maps=include_maps)  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 731, in save  
mgr.discovery(self._state_containers)  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 301, in discovery  
raise ValueError(  
ValueError: error processing: 'scenes' ->
<chimerax.scenes.manager.SceneManager object at 0x12f11d690>: Unable to
restore objects of ArrowModel class in ChimeraX-Label bundle because the class
name is not listed in the name to class table for session restore  
  
ValueError: error processing: 'scenes' -> : Unable to restore objects of
ArrowModel class in ChimeraX-Label bundle because the class name is not listed
in the name to class table for session restore  
  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 301, in discovery  
raise ValueError(  
  
See log for complete Python traceback.  
  
Traceback (most recent call last):  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 297, in discovery  
self.processed[key] = self.process(obj, parents)  
^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 341, in process  
return copy_state(data, convert=convert)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 232, in copy_state  
return _copy(data)  
^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in _copy  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in <listcomp>  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 226, in _copy  
items = [_copy(o) for o in data]  
^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 226, in <listcomp>  
items = [_copy(o) for o in data]  
^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in _copy  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in <listcomp>  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in _copy  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 217, in <listcomp>  
items = [(_copy(k), _copy(v)) for k, v in data.items()]  
^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/state.py", line 230, in _copy  
return convert(data)  
^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 339, in convert  
return add_obj(obj, parents)  
^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 307, in _add_obj  
uid = self.unique_name.from_obj(self.session, obj)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 176, in from_obj  
raise RuntimeError(  
RuntimeError: Unable to restore objects of ArrowModel class in ChimeraX-Label
bundle because the class name is not listed in the name to class table for
session restore  
  
During handling of the above exception, another exception occurred:  
  
Traceback (most recent call last):  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/cmd_line/tool.py", line 322, in execute  
cmd.run(cmd_text)  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/commands/cli.py", line 3237, in run  
result = ci.function(session, **kw_args)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/save_command/cmd.py", line 86, in cmd_save  
Command(session, registry=registry).run(provider_cmd_text, log=log)  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/commands/cli.py", line 3237, in run  
result = ci.function(session, **kw_args)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/save_command/cmd.py", line 101, in provider_save  
saver_info.save(session, path, **provider_kw)  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core_formats/__init__.py", line 95, in save  
return cxs_save(session, path, **kw)  
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 1048, in save  
session.save(output, version=version, include_maps=include_maps)  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 731, in save  
mgr.discovery(self._state_containers)  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 301, in discovery  
raise ValueError(  
ValueError: error processing: 'scenes' ->
<chimerax.scenes.manager.SceneManager object at 0x12f11d690>: Unable to
restore objects of ArrowModel class in ChimeraX-Label bundle because the class
name is not listed in the name to class table for session restore  
  
ValueError: error processing: 'scenes' -> : Unable to restore objects of
ArrowModel class in ChimeraX-Label bundle because the class name is not listed
in the name to class table for session restore  
  
File
"/Users/meng/Desktop/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-
packages/chimerax/core/session.py", line 301, in discovery  
raise ValueError(  
  
See log for complete Python traceback.  
  




OpenGL version: 4.1 Metal - 89.4
OpenGL renderer: Apple M1 Pro
OpenGL vendor: Apple

Python: 3.11.9
Locale: en_US.UTF-8
Qt version: PyQt6 6.9.1, Qt 6.9.0
Qt runtime version: 6.9.2
Qt platform: cocoa
Hardware:

    Hardware Overview:

      Model Name: MacBook Pro
      Model Identifier: MacBookPro18,1
      Model Number: MK1F3LL/A
      Chip: Apple M1 Pro
      Total Number of Cores: 10 (8 performance and 2 efficiency)
      Memory: 16 GB
      System Firmware Version: 11881.140.96
      OS Loader Version: 11881.140.96

Software:

    System Software Overview:

      System Version: macOS 15.6.1 (24G90)
      Kernel Version: Darwin 24.6.0
      Time since boot: 5 hours, 16 minutes

Graphics/Displays:

    Apple M1 Pro:

      Chipset Model: Apple M1 Pro
      Type: GPU
      Bus: Built-In
      Total Number of Cores: 16
      Vendor: Apple (0x106b)
      Metal Support: Metal 3
      Displays:
        Color LCD:
          Display Type: Built-in Liquid Retina XDR Display
          Resolution: 3456 x 2234 Retina
          Main Display: Yes
          Mirror: Off
          Online: Yes
          Automatically Adjust Brightness: Yes
          Connection Type: Internal


Installed Packages:
    aiohappyeyeballs: 2.6.1
    aiohttp: 3.12.14
    aiosignal: 1.4.0
    alabaster: 1.0.0
    antlr4-python3-runtime: 4.9.3
    appdirs: 1.4.4
    appnope: 0.1.4
    asttokens: 3.0.0
    attrs: 25.3.0
    babel: 2.17.0
    beautifulsoup4: 4.13.5
    blockdiag: 3.0.0
    blosc2: 3.10.1
    build: 1.3.0
    certifi: 2025.7.14
    cftime: 1.6.5
    charset-normalizer: 3.4.4
    ChimeraX-AddCharge: 1.5.20
    ChimeraX-AddH: 2.2.8
    ChimeraX-AlignmentAlgorithms: 2.0.2
    ChimeraX-AlignmentHdrs: 3.6.1
    ChimeraX-AlignmentMatrices: 2.1
    ChimeraX-Alignments: 3.0.2
    ChimeraX-AlphaFold: 1.0.1
    ChimeraX-AltlocExplorer: 1.1.2
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Animations: 1.0
    ChimeraX-Aniso: 1.3.2
    ChimeraX-Arrays: 1.1
    ChimeraX-Atomic: 1.60.17
    ChimeraX-AtomicLibrary: 14.2.1
    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: 1.1
    ChimeraX-BondRot: 2.0.4
    ChimeraX-BugReporter: 1.0.2
    ChimeraX-BuildStructure: 2.13.1
    ChimeraX-Bumps: 1.0
    ChimeraX-BundleBuilder: 1.6.0
    ChimeraX-ButtonPanel: 1.0.1
    ChimeraX-CageBuilder: 1.0.1
    ChimeraX-CellPack: 1.0
    ChimeraX-Centroids: 1.4
    ChimeraX-ChangeChains: 1.1
    ChimeraX-CheckWaters: 1.5
    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: 1.3.0
    ChimeraX-ConnectStructure: 2.0.1
    ChimeraX-Contacts: 1.0.1
    ChimeraX-Core: 1.11.dev202510150607
    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: 2.5.3
    ChimeraX-Help: 1.3
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.4
    ChimeraX-ItemsInspection: 1.0.1
    ChimeraX-IUPAC: 1.0
    ChimeraX-KVFinder: 1.7.1
    ChimeraX-Label: 1.2
    ChimeraX-ListInfo: 1.2.2
    ChimeraX-Log: 1.2.1
    ChimeraX-LookingGlass: 1.1
    ChimeraX-Maestro: 1.9.2
    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: 2.2.2
    ChimeraX-MCopy: 1.0
    ChimeraX-MDcrds: 2.17.1
    ChimeraX-MedicalToolbar: 1.1
    ChimeraX-Meeting: 1.0.1
    ChimeraX-Minimize: 1.3.1
    ChimeraX-MLP: 1.1.1
    ChimeraX-mmCIF: 2.16
    ChimeraX-MMTF: 2.2
    ChimeraX-ModelArchive: 1.0
    ChimeraX-Modeller: 1.5.22
    ChimeraX-ModelPanel: 1.6
    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: 1.0.1
    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: 1.15.1
    ChimeraX-OrthoPick: 1.0.1
    ChimeraX-PDB: 2.7.11
    ChimeraX-PDBBio: 1.0.1
    ChimeraX-PDBLibrary: 1.0.5
    ChimeraX-PDBMatrices: 1.0
    ChimeraX-PickBlobs: 1.0.1
    ChimeraX-Positions: 1.0
    ChimeraX-PresetMgr: 1.1.4
    ChimeraX-ProfileGrids: 1.4
    ChimeraX-PubChem: 2.2
    ChimeraX-QScore: 1.2
    ChimeraX-ReadPbonds: 1.0.1
    ChimeraX-Registration: 1.1.2
    ChimeraX-RemoteControl: 1.0
    ChimeraX-RenderByAttr: 1.6.5
    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: 1.5.2
    ChimeraX-Scenes: 0.2.2
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0.3
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0.1
    ChimeraX-Segmentations: 3.5.10
    ChimeraX-SelInspector: 1.0
    ChimeraX-SeqView: 2.17.2
    ChimeraX-Shape: 1.1
    ChimeraX-Shell: 1.0.1
    ChimeraX-Shortcuts: 1.2.1
    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: 1.48.4
    ChimeraX-Umap: 1.0
    ChimeraX-uniprot: 2.3.1
    ChimeraX-UnitCell: 1.0.1
    ChimeraX-ViewDock: 1.5.1
    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: 1.1.5
    ChimeraX-Zone: 1.0.1
    colorama: 0.4.6
    comm: 0.2.3
    contourpy: 1.3.3
    coverage: 7.10.7
    cxservices: 1.2.3
    cycler: 0.12.1
    Cython: 3.1.4
    debugpy: 1.8.17
    decorator: 5.2.1
    docstring_parser: 0.17.0
    docutils: 0.21.2
    executing: 2.2.1
    filelock: 3.19.1
    fonttools: 4.60.1
    frozenlist: 1.7.0
    fsspec: 2025.7.0
    funcparserlib: 2.0.0a0
    glfw: 2.10.0
    grako: 3.16.5
    h5py: 3.15.0
    html2text: 2025.4.15
    hydra-core: 1.3.2
    idna: 3.11
    ihm: 2.2
    imagecodecs: 2024.6.1
    imagesize: 1.4.1
    importlib_resources: 6.5.2
    iniconfig: 2.1.0
    ipykernel: 6.30.1
    ipython: 9.5.0
    ipython_pygments_lexers: 1.1.1
    ipywidgets: 8.1.7
    jedi: 0.19.2
    Jinja2: 3.1.6
    joblib: 1.5.0
    jsonargparse: 4.40.1
    jsonnet: 0.21.0
    jupyter_client: 8.6.3
    jupyter_core: 5.8.1
    jupyterlab_widgets: 3.0.15
    kiwisolver: 1.4.9
    lightning: 2.5.2
    lightning-utilities: 0.14.3
    line_profiler: 5.0.0
    llvmlite: 0.44.0
    lxml: 6.0.2
    lz4: 4.3.2
    Markdown: 3.8.2
    markdown-it-py: 3.0.0
    MarkupSafe: 3.0.3
    matplotlib: 3.10.5
    matplotlib-inline: 0.1.7
    mdurl: 0.1.2
    mpmath: 1.3.0
    msgpack: 1.1.1
    multidict: 6.6.3
    narwhals: 1.39.0
    ndindex: 1.10.0
    nest-asyncio: 1.6.0
    netCDF4: 1.6.5
    networkx: 3.3
    nibabel: 5.2.0
    nptyping: 2.5.0
    numba: 0.61.2
    numexpr: 2.14.1
    numpy: 2.2.5
    numpy: 1.26.4
    omegaconf: 2.3.0
    OpenMM: 8.2.0
    openvr: 1.26.701
    packaging: 25.0
    ParmEd: 4.2.2
    parso: 0.8.5
    pep517: 0.13.1
    pexpect: 4.9.0
    pickleshare: 0.7.5
    pillow: 11.3.0
    pip: 25.2
    pkginfo: 1.12.1.2
    platformdirs: 4.5.0
    plotly: 6.0.1
    pluggy: 1.6.0
    prompt_toolkit: 3.0.52
    propcache: 0.3.2
    protobuf: 6.31.1
    psutil: 7.0.0
    ptyprocess: 0.7.0
    pure_eval: 0.2.3
    py-cpuinfo: 9.0.0
    pybind11: 3.0.1
    pycollada: 0.8
    pydicom: 2.4.4
    Pygments: 2.18.0
    pyKVFinder: 0.8.0
    pynmrstar: 3.3.6
    pynndescent: 0.5.13
    pynrrd: 1.0.0
    PyOpenGL: 3.1.10
    PyOpenGL-accelerate: 3.1.10
    pyopenxr: 1.1.4501
    pyparsing: 3.2.5
    pyproject_hooks: 1.2.0
    PyQt6-commercial: 6.9.1
    PyQt6-Qt6: 6.9.2
    PyQt6-WebEngine-commercial: 6.9.0
    PyQt6-WebEngine-Qt6: 6.9.2
    PyQt6_sip: 13.10.2
    pytest: 8.4.2
    pytest-cov: 7.0.0
    python-dateutil: 2.9.0.post0
    pytorch-lightning: 2.5.2
    pytz: 2025.2
    PyYAML: 6.0.2
    pyzmq: 27.1.0
    qtconsole: 5.7.0
    QtPy: 2.4.3
    qtshim: 1.2
    RandomWords: 0.4.0
    requests: 2.32.5
    rich: 14.0.0
    roman-numerals-py: 3.1.0
    scikit-learn: 1.6.1
    scipy: 1.14.0
    setuptools: 80.9.0
    sfftk-rw: 0.8.1
    six: 1.17.0
    snowballstemmer: 3.0.1
    sortedcontainers: 2.4.0
    soupsieve: 2.8
    Sphinx: 8.2.3
    sphinx-autodoc-typehints: 3.2.0
    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: 0.7.6
    sympy: 1.14.0
    tables: 3.10.2
    tcia_utils: 1.5.1
    tensorboardX: 2.6.4
    threadpoolctl: 3.6.0
    tifffile: 2025.3.13
    tinyarray: 1.2.5
    tomlkit: 0.13.2
    torch: 2.7.1
    torchmetrics: 1.8.0
    tornado: 6.5.2
    tqdm: 4.67.1
    traitlets: 5.14.3
    typeshed_client: 2.8.2
    typing_extensions: 4.15.0
    tzdata: 2025.2
    umap-learn: 0.5.7
    urllib3: 2.5.0
    wcwidth: 0.2.14
    webcolors: 24.11.1
    wheel: 0.45.1
    wheel-filename: 1.4.2
    widgetsnbextension: 4.0.14
    yarl: 1.20.1

[Eric Pettersen]

The session machinery needs to skip models whose SESSION_SAVE attribute is False.

[Tom Goddard]

Would help if this were fixed soon so I can save arrows in scenes for the animation tutorial I am trying to prepare today for next week's cryoEM workshop animation tutorial. If it is hard to fix it is not critical -- I can do without scenes in the sessions.

[Eric Pettersen]

Fixed by adding a 'scene_relevant_models' attribute to the scenes manager, which skips models that don't save into session (they have some kind of controlling model).

Fix: ​https://github.com/RBVI/ChimeraX/commit/61b725f748bdd92256d14c020dfdaed9747f75f4