Fixing RubyGem version error: activesupport(1.2.5 not = 2.0.2)

Posted on January 01, 2008

I had already upgraded my Rails gem to 2.0.2, but for some reason rubygems didn’t install the rest of the updated rails gems (ActiveRecord, etc).

This did the trick: 
sudo gem update --system
sudo gem update --source http://gems.rubyonrails.org
This was the error, when trying to create a new rails app: 
$ rails foo
/usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:379:in `report_activate_error': RubyGem version error: activesupport(1.2.5 not = 2.0.2) (Gem::LoadError)
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:311:in `activate'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:337:in `activate'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:336:in `activate'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:65:in `active_gem_with_options'
        from /usr/local/lib/ruby/site_ruby/1.8/rubygems.rb:50:in `gem'
        from /usr/local/bin/rails:18

Was also seeing it while trying to run ‘rake’ on existing rails projects.

Tagged with: gems rails rake rubygems  |