Crash involving MatchMaker

[chimerax-bug-report@…]

The following bug report has been submitted:
Platform:        Windows-10-10.0.19043
ChimeraX Version: 1.3 (2021-12-08 23:08:33 UTC)
Description
Last time you used ChimeraX it crashed.
Please describe steps that led to the crash here.
I opened a cxs file and then opened another thinking to run Matchmaker.  When I clicked on matchmaker I only saw the second file as the source but no second file to compare.  So I opened the first csx file again, but this time when I clicked on matchmaker, the program shut down.
Windows fatal exception: access violation

Thread 0x00000bcc (most recent call first):
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 316 in wait
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 574 in wait
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 1284 in run
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 973 in _bootstrap_inner
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 930 in _bootstrap

Thread 0x00005884 (most recent call first):
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 316 in wait
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 574 in wait
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 1284 in run
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 973 in _bootstrap_inner
  File "C:\Program Files\ChimeraX 1.3\bin\lib\threading.py", line 930 in _bootstrap

Current thread 0x00000ccc (most recent call first):
  File "C:\Program Files\ChimeraX 1.3\bin\lib\site-packages\chimerax\ui\gui.py", line 301 in event_loop
  File "C:\Program Files\ChimeraX 1.3\bin\lib\site-packages\ChimeraX_main.py", line 867 in init
  File "C:\Program Files\ChimeraX 1.3\bin\lib\site-packages\ChimeraX_main.py", line 1018 in 
  File "C:\Program Files\ChimeraX 1.3\bin\lib\runpy.py", line 87 in _run_code
  File "C:\Program Files\ChimeraX 1.3\bin\lib\runpy.py", line 197 in _run_module_as_main
===== Log before crash start =====
UCSF ChimeraX version: 1.3 (2021-12-08)  
© 2016-2021 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open "C:\Users\r.loring\Dropbox\Research\Papers\Molecules RIC3\RIC3
> structure\AlphaFold structures in ChimeraX\Fly RIC-3.cxs" format session

opened ChimeraX session  

> select /A:51

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

> select /A:51-55

36 atoms, 38 bonds, 5 residues, 1 model selected  

> select /A:6

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

> select /A:6-12

52 atoms, 53 bonds, 7 residues, 1 model selected  

> view sel

> select clear

> view

> select /A:1

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

> select /A:1-19

136 atoms, 138 bonds, 19 residues, 1 model selected  

> hide sel cartoons

> select /A:209

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

> select /A:209-244

271 atoms, 279 bonds, 36 residues, 1 model selected  

> select /A:208

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

> select /A:208-348

1080 atoms, 1093 bonds, 141 residues, 1 model selected  

> hide sel cartoons

> select /A:350

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

> select /A:350-505

1190 atoms, 1208 bonds, 156 residues, 1 model selected  

> select /A:333

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

> select /A:333-505

1327 atoms, 1346 bonds, 173 residues, 1 model selected  

> hide sel cartoons

> select /A:67

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

> select /A:67-103

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

> open "C:/Users/r.loring/Dropbox/Research/Papers/Molecules RIC3/RIC3
> structure/AlphaFold structures in ChimeraX/Human RIC-3.cxs"

opened ChimeraX session  

> ui tool show Matchmaker

> open "C:/Users/r.loring/Dropbox/Research/Papers/Molecules RIC3/RIC3
> structure/AlphaFold structures in ChimeraX/Fly RIC-3.cxs"

opened ChimeraX session  


===== Log before crash end =====

Log:
UCSF ChimeraX version: 1.3 (2021-12-08)  
© 2016-2021 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  




OpenGL version: 3.3.0 - Build 27.20.100.9664
OpenGL renderer: Intel(R) HD Graphics 530
OpenGL vendor: Intel
Manufacturer: Dell Inc.
Model: OptiPlex 7450 AIO
OS: Microsoft Windows 10 Enterprise (Build 19043)
Memory: 8,266,158,080
MaxProcessMemory: 137,438,953,344
CPU: 8 Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz
OSLanguage: en-US
Locale: ('en_US', 'cp1252')
PyQt5 5.15.2, Qt 5.15.2
Installed Packages:
    alabaster: 0.7.12
    appdirs: 1.4.4
    Babel: 2.9.1
    backcall: 0.2.0
    blockdiag: 2.0.1
    certifi: 2021.10.8
    cftime: 1.5.1.1
    charset-normalizer: 2.0.9
    ChimeraX-AddCharge: 1.2.2
    ChimeraX-AddH: 2.1.11
    ChimeraX-AlignmentAlgorithms: 2.0
    ChimeraX-AlignmentHdrs: 3.2
    ChimeraX-AlignmentMatrices: 2.0
    ChimeraX-Alignments: 2.2.3
    ChimeraX-AlphaFold: 1.0
    ChimeraX-AltlocExplorer: 1.0.1
    ChimeraX-AmberInfo: 1.0
    ChimeraX-Arrays: 1.0
    ChimeraX-Atomic: 1.31
    ChimeraX-AtomicLibrary: 4.2
    ChimeraX-AtomSearch: 2.0
    ChimeraX-AtomSearchLibrary: 1.0
    ChimeraX-AxesPlanes: 2.0
    ChimeraX-BasicActions: 1.1
    ChimeraX-BILD: 1.0
    ChimeraX-BlastProtein: 2.0
    ChimeraX-BondRot: 2.0
    ChimeraX-BugReporter: 1.0
    ChimeraX-BuildStructure: 2.6.1
    ChimeraX-Bumps: 1.0
    ChimeraX-BundleBuilder: 1.1
    ChimeraX-ButtonPanel: 1.0
    ChimeraX-CageBuilder: 1.0
    ChimeraX-CellPack: 1.0
    ChimeraX-Centroids: 1.2
    ChimeraX-ChemGroup: 2.0
    ChimeraX-Clashes: 2.2.2
    ChimeraX-ColorActions: 1.0
    ChimeraX-ColorGlobe: 1.0
    ChimeraX-ColorKey: 1.5
    ChimeraX-CommandLine: 1.1.5
    ChimeraX-ConnectStructure: 2.0
    ChimeraX-Contacts: 1.0
    ChimeraX-Core: 1.3
    ChimeraX-CoreFormats: 1.1
    ChimeraX-coulombic: 1.3.2
    ChimeraX-Crosslinks: 1.0
    ChimeraX-Crystal: 1.0
    ChimeraX-CrystalContacts: 1.0
    ChimeraX-DataFormats: 1.2.2
    ChimeraX-Dicom: 1.0
    ChimeraX-DistMonitor: 1.1.5
    ChimeraX-DistUI: 1.0
    ChimeraX-Dssp: 2.0
    ChimeraX-EMDB-SFF: 1.0
    ChimeraX-ExperimentalCommands: 1.0
    ChimeraX-FileHistory: 1.0
    ChimeraX-FunctionKey: 1.0
    ChimeraX-Geometry: 1.1
    ChimeraX-gltf: 1.0
    ChimeraX-Graphics: 1.1
    ChimeraX-Hbonds: 2.1.2
    ChimeraX-Help: 1.2
    ChimeraX-HKCage: 1.3
    ChimeraX-IHM: 1.1
    ChimeraX-ImageFormats: 1.2
    ChimeraX-IMOD: 1.0
    ChimeraX-IO: 1.0.1
    ChimeraX-ItemsInspection: 1.0
    ChimeraX-Label: 1.1
    ChimeraX-ListInfo: 1.1.1
    ChimeraX-Log: 1.1.4
    ChimeraX-LookingGlass: 1.1
    ChimeraX-Maestro: 1.8.1
    ChimeraX-Map: 1.1
    ChimeraX-MapData: 2.0
    ChimeraX-MapEraser: 1.0
    ChimeraX-MapFilter: 2.0
    ChimeraX-MapFit: 2.0
    ChimeraX-MapSeries: 2.1
    ChimeraX-Markers: 1.0
    ChimeraX-Mask: 1.0
    ChimeraX-MatchMaker: 2.0.4
    ChimeraX-MDcrds: 2.6
    ChimeraX-MedicalToolbar: 1.0.1
    ChimeraX-Meeting: 1.0
    ChimeraX-MLP: 1.1
    ChimeraX-mmCIF: 2.4
    ChimeraX-MMTF: 2.1
    ChimeraX-Modeller: 1.2.6
    ChimeraX-ModelPanel: 1.2.1
    ChimeraX-ModelSeries: 1.0
    ChimeraX-Mol2: 2.0
    ChimeraX-Morph: 1.0
    ChimeraX-MouseModes: 1.1
    ChimeraX-Movie: 1.0
    ChimeraX-Neuron: 1.0
    ChimeraX-Nucleotides: 2.0.2
    ChimeraX-OpenCommand: 1.7
    ChimeraX-PDB: 2.6.5
    ChimeraX-PDBBio: 1.0
    ChimeraX-PDBLibrary: 1.0.2
    ChimeraX-PDBMatrices: 1.0
    ChimeraX-PickBlobs: 1.0
    ChimeraX-Positions: 1.0
    ChimeraX-PresetMgr: 1.0.1
    ChimeraX-PubChem: 2.1
    ChimeraX-ReadPbonds: 1.0.1
    ChimeraX-Registration: 1.1
    ChimeraX-RemoteControl: 1.0
    ChimeraX-ResidueFit: 1.0
    ChimeraX-RestServer: 1.1
    ChimeraX-RNALayout: 1.0
    ChimeraX-RotamerLibMgr: 2.0.1
    ChimeraX-RotamerLibsDunbrack: 2.0
    ChimeraX-RotamerLibsDynameomics: 2.0
    ChimeraX-RotamerLibsRichardson: 2.0
    ChimeraX-SaveCommand: 1.5
    ChimeraX-SchemeMgr: 1.0
    ChimeraX-SDF: 2.0
    ChimeraX-Segger: 1.0
    ChimeraX-Segment: 1.0
    ChimeraX-SelInspector: 1.0
    ChimeraX-SeqView: 2.4.6
    ChimeraX-Shape: 1.0.1
    ChimeraX-Shell: 1.0
    ChimeraX-Shortcuts: 1.1
    ChimeraX-ShowAttr: 1.0
    ChimeraX-ShowSequences: 1.0
    ChimeraX-SideView: 1.0
    ChimeraX-Smiles: 2.1
    ChimeraX-SmoothLines: 1.0
    ChimeraX-SpaceNavigator: 1.0
    ChimeraX-StdCommands: 1.6.1
    ChimeraX-STL: 1.0
    ChimeraX-Storm: 1.0
    ChimeraX-Struts: 1.0
    ChimeraX-Surface: 1.0
    ChimeraX-SwapAA: 2.0
    ChimeraX-SwapRes: 2.1
    ChimeraX-TapeMeasure: 1.0
    ChimeraX-Test: 1.0
    ChimeraX-Toolbar: 1.1
    ChimeraX-ToolshedUtils: 1.2
    ChimeraX-Tug: 1.0
    ChimeraX-UI: 1.13.7
    ChimeraX-uniprot: 2.2
    ChimeraX-UnitCell: 1.0
    ChimeraX-ViewDockX: 1.0.1
    ChimeraX-VIPERdb: 1.0
    ChimeraX-Vive: 1.1
    ChimeraX-VolumeMenu: 1.0
    ChimeraX-VTK: 1.0
    ChimeraX-WavefrontOBJ: 1.0
    ChimeraX-WebCam: 1.0
    ChimeraX-WebServices: 1.0
    ChimeraX-Zone: 1.0
    colorama: 0.4.4
    comtypes: 1.1.10
    cxservices: 1.1
    cycler: 0.11.0
    Cython: 0.29.24
    decorator: 5.1.0
    docutils: 0.17.1
    filelock: 3.0.12
    funcparserlib: 0.3.6
    grako: 3.16.5
    h5py: 3.6.0
    html2text: 2020.1.16
    idna: 3.3
    ihm: 0.21
    imagecodecs: 2021.4.28
    imagesize: 1.3.0
    ipykernel: 5.5.5
    ipython: 7.23.1
    ipython-genutils: 0.2.0
    jedi: 0.18.0
    Jinja2: 3.0.1
    jupyter-client: 6.1.12
    jupyter-core: 4.9.1
    kiwisolver: 1.3.2
    lxml: 4.6.3
    lz4: 3.1.3
    MarkupSafe: 2.0.1
    matplotlib: 3.4.3
    matplotlib-inline: 0.1.3
    msgpack: 1.0.2
    netCDF4: 1.5.7
    networkx: 2.6.3
    numexpr: 2.8.0
    numpy: 1.21.2
    openvr: 1.16.801
    packaging: 21.3
    ParmEd: 3.2.0
    parso: 0.8.3
    pickleshare: 0.7.5
    Pillow: 8.3.2
    pip: 21.2.4
    pkginfo: 1.7.1
    prompt-toolkit: 3.0.23
    psutil: 5.8.0
    pycollada: 0.7.1
    pydicom: 2.1.2
    Pygments: 2.10.0
    PyOpenGL: 3.1.5
    PyOpenGL-accelerate: 3.1.5
    pyparsing: 3.0.6
    PyQt5-commercial: 5.15.2
    PyQt5-sip: 12.8.1
    PyQtWebEngine-commercial: 5.15.2
    python-dateutil: 2.8.2
    pytz: 2021.3
    pywin32: 228
    pyzmq: 22.3.0
    qtconsole: 5.1.1
    QtPy: 1.11.3
    RandomWords: 0.3.0
    requests: 2.26.0
    scipy: 1.7.1
    setuptools: 57.5.0
    sfftk-rw: 0.7.1
    six: 1.16.0
    snowballstemmer: 2.2.0
    sortedcontainers: 2.4.0
    Sphinx: 4.2.0
    sphinx-autodoc-typehints: 1.12.0
    sphinxcontrib-applehelp: 1.0.2
    sphinxcontrib-blockdiag: 2.0.0
    sphinxcontrib-devhelp: 1.0.2
    sphinxcontrib-htmlhelp: 2.0.0
    sphinxcontrib-jsmath: 1.0.1
    sphinxcontrib-qthelp: 1.0.3
    sphinxcontrib-serializinghtml: 1.1.5
    suds-jurko: 0.6
    tables: 3.6.1
    tifffile: 2021.4.8
    tinyarray: 1.2.3
    tornado: 6.1
    traitlets: 5.1.1
    urllib3: 1.26.7
    wcwidth: 0.2.5
    webcolors: 1.11.1
    wheel: 0.37.0
    wheel-filename: 1.3.0
    WMI: 1.5.1

[pett]

I tried following the recipe the user provided, but MatchMaker closes when a session is opened (it's not session enduring), so you have to actually restart the tool. It's not clear from the user's description whether the tool disappeared when he/she opened a session. Anyway, this whole thing worked on my Mac, so I need to try on Windows. If the MatchMaker tool isn't disappearing between sessions, then that's a whole 'nother problem, the cause of which I would have no idea.

The user is also laboring under the misapprehension that opening a session leaves the previous session intact.

[pett]

Couldn't get it to happen on Windows either.

[Tom Goddard]

Probably something special (and bad) in the session files. Also suspect "clicked on matchmaker" probably meant Tools / Structure Analysis / MatchMaker since as you say the window itself should disappear when each session is opened. Crash was in the event loop which might implicate Qt. On the Mac we see these event loop crashes and the C++ stack indicates it was calling back into Python and died as if the Python function pointer was 0x0. Makes me think Qt is somehow holding a python callable that was deleted, ie a reference count error.