# Failed to load segmentation in DentalSegmentator extension - nnUNet processing error

**URL:** <https://discourse.slicer.org/t/failed-to-load-segmentation-in-dentalsegmentator-extension-nnunet-processing-error/37448>\
**Category:** SlicerDMRI\
**Tags:** segmentation, segmentations, segment-editor\
**Created:** [July 18, 2024, 10:51am UTC](https://discourse.slicer.org/t/failed-to-load-segmentation-in-dentalsegmentator-extension-nnunet-processing-error/37448 "2024-07-18T10:51:43Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Adityanath\_Shiralkar](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/adityanath_shiralkar/32/77353_2.png) [@Adityanath\_Shiralkar](https://discourse.slicer.org/u/Adityanath_Shiralkar)\
**Post date:** [July 18, 2024, 10:51am UTC](https://discourse.slicer.org/t/failed-to-load-segmentation-in-dentalsegmentator-extension-nnunet-processing-error/37448/1 "2024-07-18T10:51:43Z")

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Summary:  
I encountered an error while using the DentalSegmentator extension in 3D Slicer. When attempting to run the segmentation process, the following error message was displayed:  
“Failed to load the segmentation. Something went wrong during the nnUNet processing. Please check the log files for potential errors and contact the library maintainers.”

Steps to reproduce:  
Open 3D Slicer (version 5.7.0-2024-07-12) on Windows 11.  
Install and enable the DentalSegmentator extension.  
Import MRI files.  
Attempt to run the segmentation process.  
Observe the error message.

Expected behavior:  
The segmentation process should complete successfully, generating a 3D model from the MRI scans.

Actual behavior"  
The segmentation process fails with the error message:  
“Failed to load the segmentation. Something went wrong during the nnUNet processing. Please check the log files for potential errors and contact the library maintainers.”

Environment:  
Slicer version: Slicer-5.7.0-2024-07-12  
Operating system: Windows 11