# TotalSegmentator Errors on Mac "...non-zero exit status 1" then "Application is required"

**URL:** <https://discourse.slicer.org/t/totalsegmentator-errors-on-mac-non-zero-exit-status-1-then-application-is-required/36739>\
**Category:** Support\
**Tags:** segmentation, totalsegmentator\
**Created:** [June 12, 2024, 10:51pm UTC](https://discourse.slicer.org/t/totalsegmentator-errors-on-mac-non-zero-exit-status-1-then-application-is-required/36739 "2024-06-12T22:51:01Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nbn](https://avatars.discourse-cdn.com/v4/letter/n/cc9497/32.png) [@nbn](https://discourse.slicer.org/u/nbn)\
**Post date:** [June 12, 2024, 10:51pm UTC](https://discourse.slicer.org/t/totalsegmentator-errors-on-mac-non-zero-exit-status-1-then-application-is-required/36739/1 "2024-06-12T22:51:01Z")

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Hello, what is the process for using the TotalSegmentator module on a Mac?  
Operating System: macOS Monterey Version 12.1  
Slicer Version: 5.6.2

I tried installing PyTorch and TotalSegmentator normally. Then I uninstalled both and tried installing PyTorch with CPU (using the application and through typing into the terminal), then installing TotalSegmentator. In between each step of installing extensions, I restarted Slicer as well. At first, the error I was getting was “…non-zero exit status 1” (see image below),

 ![Slicer_Error](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/9/f/9f2af98f0773fcd2f0290374ac4f79bed4701bc4.jpeg)

then after uninstalling everything (including the application) and trying to install it after downloading Git, it still did not work but I am getting an error that the TotalSegmentator “Application is required”, even though I can see it is installed in my extension manager and restarted Slicer.

 ![Slicer_Error_2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/b/8/b85d64462cd17a9b62e245b273013e7f8db0ed30.jpeg)

I followed the normal installation steps on my Windows PC and had no problems, but on Mac, it won’t work. Thank you for your help!

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [June 18, 2024, 7:52pm UTC](https://discourse.slicer.org/t/totalsegmentator-errors-on-mac-non-zero-exit-status-1-then-application-is-required/36739/3 "2024-06-18T19:52:00Z")

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The macOS issue is [fixed now](https://github.com/lassoan/SlicerTotalSegmentator/issues/61). TotalSegmentator will work again in Slicer Preview Releases from tomorrow.