# Problems with general registration elastix

**URL:** <https://discourse.slicer.org/t/problems-with-general-registration-elastix/7556>\
**Category:** Support\
**Created:** [July 12, 2019, 5:05pm UTC](https://discourse.slicer.org/t/problems-with-general-registration-elastix/7556 "2019-07-12T17:05:24Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![zahiraabdala](https://avatars.discourse-cdn.com/v4/letter/z/838e76/32.png) [@zahiraabdala](https://discourse.slicer.org/u/zahiraabdala)\
**Post date:** [July 12, 2019, 5:05pm UTC](https://discourse.slicer.org/t/problems-with-general-registration-elastix/7556/1 "2019-07-12T17:05:24Z")

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Good afternoon,

I try to use “General Registration Elastix” module extension but it tells me

Volume registration is started in working directory: /Volumes/Slicer-4.10.2-macosx-amd64/Slicer.app/Contents/Extensions-28257/Elastix/20190712\_135520\_600  
Register volumes…  
Error: Command ‘elastix’ returned non-zero exit status 254

I don´t know what that error means. I have installed 4.10.2 version for MAC.

Thank you!

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**Author:** ![jcfr](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jcfr/32/17825_2.png) [@jcfr](https://discourse.slicer.org/u/jcfr)\
**Post date:** [July 13, 2019, 1:11am UTC](https://discourse.slicer.org/t/problems-with-general-registration-elastix/7556/2 "2019-07-13T01:11:17Z")

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Is there any other relevant information displayed in the log ?

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**Author:** ![Alex\_Vergara](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/alex_vergara/32/15205_2.png) [@Alex\_Vergara](https://discourse.slicer.org/u/Alex_Vergara)\
**Post date:** [July 15, 2019, 10:12am UTC](https://discourse.slicer.org/t/problems-with-general-registration-elastix/7556/3 "2019-07-15T10:12:15Z")

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You are running Slicer from a read-only working directory, you need to move Slicer to /Users/YourUser/Applications/ . This will solve all your problems

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**Author:** ![zahiraabdala](https://avatars.discourse-cdn.com/v4/letter/z/838e76/32.png) [@zahiraabdala](https://discourse.slicer.org/u/zahiraabdala)\
**Post date:** [July 17, 2019, 2:02pm UTC](https://discourse.slicer.org/t/problems-with-general-registration-elastix/7556/4 "2019-07-17T14:02:15Z")

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Hi Jean  
No, only showed me this.  
Thanks for answer to me.

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**Author:** ![zahiraabdala](https://avatars.discourse-cdn.com/v4/letter/z/838e76/32.png) [@zahiraabdala](https://discourse.slicer.org/u/zahiraabdala)\
**Post date:** [July 17, 2019, 2:05pm UTC](https://discourse.slicer.org/t/problems-with-general-registration-elastix/7556/5 "2019-07-17T14:05:49Z")

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Hi Alex, I am running Slicer from a /Users/Your User/Applications/ and doesn’t work. I think that there is other problem.

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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:** [July 17, 2019, 2:18pm UTC](https://discourse.slicer.org/t/problems-with-general-registration-elastix/7556/6 "2019-07-17T14:18:13Z")

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I think this problem has been fixed recently. You need to [update SlicerElastix extension](https://www.slicer.org/wiki/Documentation/Nightly/SlicerApplication/ExtensionsManager#Updating_installed_extensions) (or uninstall and reinstall SlicerElastix).