# Extensions in Mac does not work

**URL:** <https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297>\
**Category:** Support\
**Created:** [June 24, 2019, 6:44pm UTC](https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297 "2019-06-24T18:44:12Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [June 24, 2019, 6:44pm UTC](https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297/1 "2019-06-24T18:44:12Z")

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Hi

I cannot install extensions in Mac.  
Tried through extensions managers- says error, check whether slicer is installed properly  
Then tried manual installation , as explained in previous posts  
Could you please advise

Thanks

Tom

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [June 24, 2019, 6:58pm UTC](https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297/2 "2019-06-24T18:58:13Z")

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What version of Slicer are you using? What extensions are you trying to install?

Did you build your Slicer from source? or did you download from [download.slicer.org](http://download.slicer.org)?

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [June 24, 2019, 7:03pm UTC](https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297/3 "2019-06-24T19:03:36Z")

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Hi James @jamesobutler, I downloaded the latest nightly today. Even tried with the stable also.  
Mainly i want the elastix but I tried couple of others like angel planes, segmentation extra effcets etc. Same error

Thanks

Tom

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [June 24, 2019, 7:07pm UTC](https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297/4 "2019-06-24T19:07:44Z")

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Have you followed instructions to install Slicer into a location with write access as described in [Slicer app installation "hint" for mac installer](https://discourse.slicer.org/t/slicer-app-installation-hint-for-mac-installer/6329)?

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [June 24, 2019, 7:18pm UTC](https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297/5 "2019-06-24T19:18:36Z")

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Thanks,

I read that , But i don’t understand this,. I m a med student, not IT knowledge. sorry

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**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [June 24, 2019, 7:20pm UTC](https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297/6 "2019-06-24T19:20:20Z")

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Drag the Slicer application icon to the Applications folder.

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**Author:** ![Jainey](https://avatars.discourse-cdn.com/v4/letter/j/a88e57/32.png) [@Jainey](https://discourse.slicer.org/u/Jainey)\
**Post date:** [June 24, 2019, 7:25pm UTC](https://discourse.slicer.org/t/extensions-in-mac-does-not-work/7297/7 "2019-06-24T19:25:09Z")

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OMG You saved my day

Thank you ever soo much

Tom