# Error in install extensions

**URL:** <https://discourse.slicer.org/t/error-in-install-extensions/866>\
**Category:** Development\
**Created:** [August 14, 2017, 12:09pm UTC](https://discourse.slicer.org/t/error-in-install-extensions/866 "2017-08-14T12:09:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![park](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/park/32/5717_2.png) [@park](https://discourse.slicer.org/u/park)\
**Post date:** [August 14, 2017, 12:09pm UTC](https://discourse.slicer.org/t/error-in-install-extensions/866/1 "2017-08-14T12:09:51Z")

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Hi i’m Tae Young Park

I had a struggle time about slicer extensions section

there are some error like that

“No extensions found for macosx:64-bit, revision: ‘672e2c0’. Please try a different combination”

 ![20](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/6/c696b7f44a46103b521d0ca3362fe45b18cdec9a.png)

what is the problem , ??  
I can’t solve this problem even though i rebuild whole system ,

plz help me , ㅠㅠ

Thanks Tae Young

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<div class="post-metadata">

**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:** [August 14, 2017, 12:12pm UTC](https://discourse.slicer.org/t/error-in-install-extensions/866/2 "2017-08-14T12:12:35Z")

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Have you build Slicer yourself? If yes, and you need to use Slicer’s appstore for getting extensions, then you must use exactly the same build settings as the Slicer factory machines (most importantly, use SVN repository and a version for that factory machines created extensions).

Note that today there was an error with extension builds on factory machines - see [No extensions for latest nightly](https://discourse.slicer.org/t/no-extensions-for-latest-nightly/865)