# NvidiaAIAssistedAnnotation extension for macOS

**URL:** <https://discourse.slicer.org/t/nvidiaaiassistedannotation-extension-for-macos/12158>\
**Category:** Support\
**Tags:** extensions-manager\
**Created:** [June 22, 2020, 3:53pm UTC](https://discourse.slicer.org/t/nvidiaaiassistedannotation-extension-for-macos/12158 "2020-06-22T15:53:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Lorena](https://avatars.discourse-cdn.com/v4/letter/l/ce73a5/32.png) [@Lorena](https://discourse.slicer.org/u/Lorena)\
**Post date:** [June 22, 2020, 3:53pm UTC](https://discourse.slicer.org/t/nvidiaaiassistedannotation-extension-for-macos/12158/1 "2020-06-22T15:53:04Z")

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Operating system: macOS Catalina version 10.15.5  
Slicer version: 4.11.0, revision 29163, built 2020-6-22 (as of [https://download.slicer.org](https://download.slicer.org))  
Expected behavior: open Extensions Manager and install NvidiaAIAssistedAnnotation  
Actual behavior: An error window appears saying “There is no application set to open the URL…” and I cannot see any extensions listed. However I have managed to install an extension from local file downloaded from [http://slicer.kitware.com/midas3/slicerappstore/](http://slicer.kitware.com/midas3/slicerappstore/) and I would like to do the same for the NvidiaAIAssistedAnnotation extension, but it only appears available for Windows in that slicerappstore. Any ideas how I can get that extension?

This is the first time I installed and used 3D slicer, so I don’t know if there is any additional step I need to set up that URL and fix the error above.

Thanks,  
Lorena

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**Author:** ![Lorena](https://avatars.discourse-cdn.com/v4/letter/l/ce73a5/32.png) [@Lorena](https://discourse.slicer.org/u/Lorena)\
**Post date:** [June 22, 2020, 5:16pm UTC](https://discourse.slicer.org/t/nvidiaaiassistedannotation-extension-for-macos/12158/2 "2020-06-22T17:16:34Z")

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I can see it now available in [http://slicer.kitware.com/midas3/slicerappstore](http://slicer.kitware.com/midas3/slicerappstore) for macOS too and I was able to install it