# Gem install error for activesupport - wrong version

**URL:** <https://www.ruby-forum.com/t/gem-install-error-for-activesupport-wrong-version/142334>\
**Category:** Rails\
**Created:** [July 6, 2008, 11:33pm UTC](https://www.ruby-forum.com/t/gem-install-error-for-activesupport-wrong-version/142334 "2008-07-06T23:33:48Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Kriya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/7feea3/32.png) [@Kriya](https://www.ruby-forum.com/u/Kriya)\
**Post date:** [July 6, 2008, 11:33pm UTC](https://www.ruby-forum.com/t/gem-install-error-for-activesupport-wrong-version/142334/1 "2008-07-06T23:33:48Z")

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I installed rails 2.1.0  
I updated my gems with the following commands

gem update --system  
gem update --source [http://gems.rubyonrails.org](http://gems.rubyonrails.org)

But when I run ruby script/server, I get the following error:

C:/InstantRails/ruby/lib/ruby/site\_ruby/1.8/rubygems.rb:578:in  
`report\_activate\_  
error’: RubyGem version error: activesupport(2.1.0 not = 1.4.2)  
(Gem::LoadError)

Yes, my active support is not 1.4.2 as I updated it to 2.1.0. What can  
I do here.

Thanks

---

<div class="post-metadata">

**Author:** ![Kriya](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/7feea3/32.png) [@Kriya](https://www.ruby-forum.com/u/Kriya)\
**Post date:** [July 6, 2008, 11:37pm UTC](https://www.ruby-forum.com/t/gem-install-error-for-activesupport-wrong-version/142334/2 "2008-07-06T23:37:18Z")

</div>

Changed environment.rb to

RAILS\_GEM\_VERSION = ‘2.1.0’ unless defined? RAILS\_GEM\_VERSION

and it worked.