# New extensions can not work on Slicer 5.4.0 on MacOS

**URL:** <https://discourse.slicer.org/t/new-extensions-can-not-work-on-slicer-5-4-0-on-macos/31535>\
**Category:** Support\
**Created:** [September 4, 2023, 6:01am UTC](https://discourse.slicer.org/t/new-extensions-can-not-work-on-slicer-5-4-0-on-macos/31535 "2023-09-04T06:01:18Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![Sam\_Horvath](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/sam_horvath/32/3092_2.png) [@Sam\_Horvath](https://discourse.slicer.org/u/Sam_Horvath)\
**Post date:** [September 19, 2023, 2:23pm UTC](https://discourse.slicer.org/t/new-extensions-can-not-work-on-slicer-5-4-0-on-macos/31535/14 "2023-09-19T14:23:57Z")

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Due to some (probably unrelated) factory issues, the extensions might not have been rebuilt yet to take into effect now changes.

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_[View the full topic](https://discourse.slicer.org/t/new-extensions-can-not-work-on-slicer-5-4-0-on-macos/31535)._