# Problem with Rails gem

**URL:** <https://www.ruby-forum.com/t/problem-with-rails-gem/145456>\
**Category:** Rails\
**Created:** [August 9, 2008, 10:35pm UTC](https://www.ruby-forum.com/t/problem-with-rails-gem/145456 "2008-08-09T22:35:59Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ron](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/ecae2f/32.png) [@ron](https://www.ruby-forum.com/u/ron)\
**Post date:** [August 9, 2008, 10:35pm UTC](https://www.ruby-forum.com/t/problem-with-rails-gem/145456/1 "2008-08-09T22:35:59Z")

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Hi,

So when I go to execute script/plugin it tells me:

Missing the Rails 2.1.0 gem. Please `gem install -v=2.1.0 rails`,  
update your RAILS\_GEM\_VERSION setting in config/environment.rb for the  
Rails version you do have installed, or comment out RAILS\_GEM\_VERSION  
to use the latest version installed.

This even though I have rails 2.1.0 installed. What could it be?

Ron

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**Author:** ![ron](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/ecae2f/32.png) [@ron](https://www.ruby-forum.com/u/ron)\
**Post date:** [August 10, 2008, 2:59am UTC](https://www.ruby-forum.com/t/problem-with-rails-gem/145456/2 "2008-08-10T02:59:39Z")

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Check the rails version in environment.rb and make sure it is 2.1

[Http://www.rubyplus.org](Http://www.rubyplus.org)  
Free Ruby & Rails screencasts

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<div class="post-metadata">

**Author:** ![ron](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/ecae2f/32.png) [@ron](https://www.ruby-forum.com/u/ron)\
**Post date:** [August 10, 2008, 3:09am UTC](https://www.ruby-forum.com/t/problem-with-rails-gem/145456/3 "2008-08-10T03:09:36Z")

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Yep, its 2.1.