# Problems installing Gallery Extension

**URL:** <https://www.ruby-forum.com/t/problems-installing-gallery-extension/105110>\
**Category:** Radiant CMS\
**Created:** [May 25, 2007, 9:12pm UTC](https://www.ruby-forum.com/t/problems-installing-gallery-extension/105110 "2007-05-25T21:12:35Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![d\_n](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/e9bcb4/32.png) [@d\_n](https://www.ruby-forum.com/u/d_n)\
**Post date:** [May 25, 2007, 9:12pm UTC](https://www.ruby-forum.com/t/problems-installing-gallery-extension/105110/1 "2007-05-25T21:12:35Z")

</div>

I’m trying to use the Gallery Extension:  
([http://darcs.bigchieflabs.com/radiant/extensions/gallery/rdoc/](http://darcs.bigchieflabs.com/radiant/extensions/gallery/rdoc/))

but I can’t seem to get it up and running.

I have the files unpacked in my vendor/extensions directory, but when  
I try to initialize it like this:

rake radiant:extensions:gallery:install

I get this message:

Extensions cannot be used until Radiant migrations are up to date.  
rake aborted!  
uninitialized constant GalleryExtension

I’m completely new to Rails, so I don’t know what might be tripping  
this up. The “Galleries” tab does show up in my Radiant admin area,  
but clicking it generates a 500 error.

I found a similar thread here, and tried the suggestions  
(reinstalling Radiant, reinstalling the Extension), but can’t seem to  
get it working.

Any help appreciated!  
Thanks,  
-dan