TotalSegmentator fails to install PyTorch dependencies – installTorch() got unexpected keyword argument 'torchVisionVersionRequirement'

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1

I’m trying to use the TotalSegmentator extension in 3D Slicer for segmenting an MRI dataset, but I’m running into a consistent error during the dependency installation step.

When clicking “Apply” in the TotalSegmentator module, I get:

PyTorch Python package is required. Installing… (it may take several minutes)

Failed to install Python dependencies:
PyTorchUtilsLogic.installTorch() got an unexpected keyword argument ‘torchVisionVersionRequirement’

nvironment:

  • OS: Windows (also tested on macOS with same error)

  • Slicer version: 5.11.0 (Preview)
    (Also tested on 5.10 stable with same issue

  • Extensions installed:

    • TotalSegmentator (latest)

    • PyTorch (latest via Extensions Manager)

    • nnUNet (latest)

Observations: PyTorch appears installed and visible in Extensions Manager. Error occurs during the automatic dependency installation step triggered by TotalSegmentator. Suggests a mismatch between TotalSegmentator and PyTorchUtils API (unexpected argument)

Is this a known compatibility issue between TotalSegmentator and current PyTorchUtils versions? Is there a recommended Slicer version / extension version combination that avoids this? Is there a way to bypass the internal PyTorch installation step and point to an existing PyTorch install?

2

Have you tried MONAIAuto3DSeg
It works for version 5.10

3

Sorry, that’s due to a recent regression that I cause when fixing the macOS installation. I’ve fixed the issue now, please retry tomorrow. You can either use the latest Slicer Stable Release (Slicer-5.10) and update the TotalSegmentator extension; or install the latest Slicer Preview Release (Slicer-5.11) tomorrow.

4

hallo sir，could I try now？

5

You can make these changes locally in TotalSegmentator.py‎ file on your computer (you can find the location of the file in the error message in the Python console); or wait for the nightly builds to complete at around 10am EST.

6

thanks a lot sir!Really appreciate it!

7

image
image1973×533 41.8 KB
Sorry sir,I cant find any changes when I try to modify your code locally.Did I do something wrong?thank for your reply again!

8

Please copy here the complete error message. Don’t forget to reload the module or restart Slicer after you make the changes and save the file.

9

Failed to compute results.

Command ‘[‘D:/software/3D Slicer 5.10.0/bin/../bin\\PythonSlicer.EXE’, ‘D:\\software\\3D Slicer 5.10.0\\lib\\Python\\Scripts\\TotalSegmentator.exe’, ‘-i’, ‘C:/Users/Lenovo/AppData/Local/Temp/Slicer/__SlicerTemp__2026-05-05_11+01+56.029/total-segmentator-input.nii’, ‘-o’, ‘C:/Users/Lenovo/AppData/Local/Temp/Slicer/__SlicerTemp__2026-05-05_11+01+56.029/segmentation’, ‘–device’, ‘gpu’, ‘–task’, ‘vertebrae_body’]’ returned non-zero exit status 1.