The following bug report has been submitted:
Platform: macOS-15.6.1-arm64-arm-64bit
ChimeraX Version: 1.11.dev202510142259 (2025-10-14 22:59:05 UTC)
Description
Running boltz predict with no sequences or ligands should give a user friendly error message rather than running Boltz and generating a traceback.
Log:
UCSF ChimeraX version: 1.11.dev202510142259 (2025-10-14)
© 2016-2025 Regents of the University of California. All rights reserved.
How to cite UCSF ChimeraX
> boltz predict
Running Boltz prediction of on gpu
Using multiple sequence alignment server https://api.colabfold.com
Running boltz prediction failed with exit code 0:
command:
/Users/goddard/boltz22/bin/boltz predict
/Users/goddard/Desktop/boltz/boltz_60/boltz_60.yaml --use_msa_server
--accelerator gpu --no_kernels
stdout:
Boltz version 2.2.0
MSA server enabled: https://api.colabfold.com
MSA server authentication: no credentials provided
Checking input data.
Processing 1 inputs with 1 threads.
Failed to process /Users/goddard/Desktop/boltz/boltz_60/boltz_60.yaml.
Skipping. Error: 'NoneType' object is not iterable.
stderr:
0%| | 0/1 [00:00<?, ?it/s]Traceback (most recent call last):
File "/Users/goddard/boltz22/lib/python3.11/site-packages/boltz/main.py", line
544, in process_input
target = parse_yaml(path, ccd, mol_dir, boltz2)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/goddard/boltz22/lib/python3.11/site-
packages/boltz/data/parse/yaml.py", line 68, in parse_yaml
return parse_boltz_schema(name, data, ccd, mol_dir, boltz2)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/goddard/boltz22/lib/python3.11/site-
packages/boltz/data/parse/schema.py", line 1018, in parse_boltz_schema
for item in schema["sequences"]:
TypeError: 'NoneType' object is not iterable
100%|██████████| 1/1 [00:00<00:00, 376.61it/s]
GPU available: True (mps), used: True
TPU available: False, using: 0 TPU cores
HPU available: False, using: 0 HPUs
/Users/goddard/boltz22/lib/python3.11/site-
packages/pytorch_lightning/trainer/connectors/logger_connector/logger_connector.py:76:
Starting from v1.9.0, `tensorboardX` has been removed as a dependency of the
`pytorch_lightning` package, due to potential conflicts with other packages in
the ML ecosystem. For this reason, `logger=True` will use `CSVLogger` as the
default logger, unless the `tensorboard` or `tensorboardX` packages are found.
Please `pip install lightning[extra]` or one of them to enable TensorBoard
support by default
OpenGL version: 4.1 Metal - 89.4
OpenGL renderer: Apple M2 Ultra
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: Mac Studio
Model Identifier: Mac14,14
Model Number: Z1800003VLL/A
Chip: Apple M2 Ultra
Total Number of Cores: 24 (16 performance and 8 efficiency)
Memory: 64 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: 60 days, 17 hours, 4 minutes
Graphics/Displays:
Apple M2 Ultra:
Chipset Model: Apple M2 Ultra
Type: GPU
Bus: Built-In
Total Number of Cores: 60
Vendor: Apple (0x106b)
Metal Support: Metal 3
Displays:
PHL 278B1:
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
babel: 2.17.0
beautifulsoup4: 4.13.5
blockdiag: 3.0.0
blosc2: 3.10.0
build: 1.3.0
certifi: 2025.8.3
cftime: 1.6.4.post1
charset-normalizer: 3.4.3
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-Aniso: 1.3.2
ChimeraX-Arrays: 1.1
ChimeraX-Atomic: 1.60.17
ChimeraX-AtomicLibrary: 14.2
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-clix: 0.2.4
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.dev202510142259
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-PhenixUI: 1.3.9
ChimeraX-PickBlobs: 1.0.1
ChimeraX-Positions: 1.0
ChimeraX-PresetMgr: 1.1.3
ChimeraX-ProfileGrids: 1.4
ChimeraX-PubChem: 2.2
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
docutils: 0.21.2
executing: 2.2.1
filelock: 3.19.1
fonttools: 4.60.1
funcparserlib: 2.0.0a0
glfw: 2.10.0
grako: 3.16.5
h5py: 3.14.0
html2text: 2025.4.15
idna: 3.10
ihm: 2.2
imagecodecs: 2024.6.1
imagesize: 1.4.1
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
jupyter_client: 8.6.3
jupyter_core: 5.8.1
jupyterlab_widgets: 3.0.15
kiwisolver: 1.4.9
line_profiler: 5.0.0
llvmlite: 0.44.0
lxml: 6.0.2
lz4: 4.3.2
Markdown: 3.8.2
MarkupSafe: 3.0.3
matplotlib: 3.10.3
matplotlib: 3.10.5
matplotlib-inline: 0.1.7
msgpack: 1.1.1
narwhals: 2.6.0
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: 2.13.1
numpy: 2.2.6
numpy: 1.26.4
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: 6.3.1
pluggy: 1.6.0
prompt_toolkit: 3.0.52
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: 0.8.3
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: 6.9.1
PyQt6-Qt6: 6.9.2
PyQt6-WebEngine: 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
pytz: 2025.2
pyzmq: 27.1.0
qtconsole: 5.7.0
QtPy: 2.4.3
qtshim: 1.2
RandomWords: 0.4.0
requests: 2.32.5
roman-numerals-py: 3.1.0
scikit-learn: 1.6.1
scipy: 1.14.0
Send2Trash: 1.8.3
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
tables: 3.10.2
tcia_utils: 1.5.1
threadpoolctl: 3.6.0
tifffile: 2025.3.13
tinyarray: 1.2.5
tomlkit: 0.13.3
tornado: 6.5.2
tqdm: 4.67.1
traitlets: 5.14.3
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
![[ChimeraX Issue Tracking System]](/trac/ChimeraX/chrome/site/ChimeraX-icon.svg){kind=icon}
Fixed.
Now gives clear error message of boltz prediction run with no molecules.