# Dental segmentator not working on mac again

**URL:** <https://discourse.slicer.org/t/dental-segmentator-not-working-on-mac-again/44443>\
**Category:** Support\
**Created:** [September 11, 2025, 6:26am UTC](https://discourse.slicer.org/t/dental-segmentator-not-working-on-mac-again/44443 "2025-09-11T06:26:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mohammed\_alshakhas](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mohammed_alshakhas/32/10025_2.png) [@mohammed\_alshakhas](https://discourse.slicer.org/u/mohammed_alshakhas)\
**Post date:** [September 11, 2025, 6:26am UTC](https://discourse.slicer.org/t/dental-segmentator-not-working-on-mac-again/44443/1 "2025-09-11T06:26:14Z")

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DENTAL SEGMENTATOR NOT WORKING ON MAC AGAIN

 ![Screenshot 2025-09-11 at 09.23.48](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/2/e/2ee7d44b501943921242a05be78b2e0ac6f7fcee.png)

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**Author:** ![Sankalpa\_Gamage](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sankalpa_gamage/32/81459_2.png) [@Sankalpa\_Gamage](https://discourse.slicer.org/u/Sankalpa_Gamage)\
**Post date:** [January 26, 2026, 8:19am UTC](https://discourse.slicer.org/t/dental-segmentator-not-working-on-mac-again/44443/2 "2026-01-26T08:19:09Z")

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same here

2026/01/26 13:46:58.505 :: nnUNet is already installed (2.6.2) and compatible with requested version (nnunetv2).

2026/01/26 13:47:04.521 :: Transferring volume to nnUNet in /private/var/folders/nf/nrhb0m1d6f50xtt7d9jx9ccw0000gn/T/Slicer-tByqnM

2026/01/26 13:47:06.421 :: Starting nnUNet with the following parameters:

2026/01/26 13:47:06.421 ::

2026/01/26 13:47:06.421 :: /Applications/Slicer.app/Contents/lib/Python/bin/nnUNetv2\_predict -i /private/var/folders/nf/nrhb0m1d6f50xtt7d9jx9ccw0000gn/T/Slicer-tByqnM/input -o /private/var/folders/nf/nrhb0m1d6f50xtt7d9jx9ccw0000gn/T/Slicer-tByqnM/output -d Dataset111\_453CT -tr nnUNetTrainer -p nnUNetPlans -c 3d\_fullres -f 0 -npp 1 -nps 1 -step\_size 0.5 -device cpu -chk checkpoint\_final.pth --disable\_tta

2026/01/26 13:47:06.421 ::

2026/01/26 13:47:06.421 :: JSON parameters :

2026/01/26 13:47:06.421 :: {

2026/01/26 13:47:06.421 :: “folds”: “0”,

2026/01/26 13:47:06.421 :: “device”: “cpu”,

2026/01/26 13:47:06.421 :: “stepSize”: 0.5,

2026/01/26 13:47:06.421 :: “disableTta”: true,

2026/01/26 13:47:06.421 :: “nProcessPreprocessing”: 1,

2026/01/26 13:47:06.421 :: “nProcessSegmentationExport”: 1,

2026/01/26 13:47:06.421 :: “checkPointName”: “”,

2026/01/26 13:47:06.421 :: “modelPath”: {

2026/01/26 13:47:06.421 :: “\_path”: “/Applications/Slicer.app/Contents/Extensions-34045/DentalSegmentator/lib/Slicer-5.10/qt-scripted-modules/Resources/ML”

2026/01/26 13:47:06.421 :: }

2026/01/26 13:47:06.421 :: }

2026/01/26 13:47:06.434 :: nnUNet preprocessing…

2026/01/26 13:47:11.324 :: Traceback (most recent call last):

2026/01/26 13:47:11.324 :: File “/Applications/Slicer.app/Contents/lib/Python/bin/nnUNetv2\_predict”, line 5, in

2026/01/26 13:47:11.329 :: from nnunetv2.inference.predict\_from\_raw\_data import predict\_entry\_point

2026/01/26 13:47:11.329 :: File “/Applications/Slicer.app/Contents/lib/Python/lib/python3.12/site-packages/nnunetv2/inference/predict\_from\_raw\_data.py”, line 24, in

2026/01/26 13:47:11.329 :: from nnunetv2.inference.data\_iterators import PreprocessAdapterFromNpy, preprocessing\_iterator\_fromfiles, \

2026/01/26 13:47:11.329 :: File “/Applications/Slicer.app/Contents/lib/Python/lib/python3.12/site-packages/nnunetv2/inference/data\_iterators.py”, line 12, in

2026/01/26 13:47:11.329 :: from nnunetv2.preprocessing.preprocessors.default\_preprocessor import DefaultPreprocessor

2026/01/26 13:47:11.329 :: File “/Applications/Slicer.app/Contents/lib/Python/lib/python3.12/site-packages/nnunetv2/preprocessing/preprocessors/default\_preprocessor.py”, line 34, in

2026/01/26 13:47:11.329 :: from nnunetv2.utilities.plans\_handling.plans\_handler import PlansManager, ConfigurationManager

2026/01/26 13:47:11.329 :: File “/Applications/Slicer.app/Contents/lib/Python/lib/python3.12/site-packages/nnunetv2/utilities/plans\_handling/plans\_handler.py”, line 18, in

2026/01/26 13:47:11.329 :: from nnunetv2.utilities.label\_handling.label\_handling import get\_labelmanager\_class\_from\_plans

2026/01/26 13:47:11.329 :: File “/Applications/Slicer.app/Contents/lib/Python/lib/python3.12/site-packages/nnunetv2/utilities/label\_handling/label\_handling.py”, line 7, in

2026/01/26 13:47:11.329 :: from acvl\_utils.cropping\_and\_padding.bounding\_boxes import bounding\_box\_to\_slice, insert\_crop\_into\_image

2026/01/26 13:47:11.329 :: ImportError: cannot import name ‘insert\_crop\_into\_image’ from ‘acvl\_utils.cropping\_and\_padding.bounding\_boxes’ (/Applications/Slicer.app/Contents/lib/Python/lib/python3.12/site-packages/acvl\_utils/cropping\_and\_padding/bounding\_boxes.py)

2026/01/26 13:47:12.046 :: Loading inference results…

2026/01/26 13:47:18.960 :: Error loading results :

2026/01/26 13:47:18.960 :: Failed to load the segmentation.

2026/01/26 13:47:18.960 :: Something went wrong during the nnUNet processing.

2026/01/26 13:47:18.960 :: Please check the logs for potential errors and contact the library maintainers.