/home/valberg/Aptana/plugins/org.jruby_1.0.1.4620p/lib/ruby/site_ruby/1.8/rubygems.rb:304:in `report_activate_error': Could not find RubyGem rails (>= 0) (Gem::LoadError)

	from /home/valberg/Aptana/plugins/org.jruby_1.0.1.4620p/lib/ruby/site_ruby/1.8/rubygems.rb:238:in `activate'
	from /home/valberg/Aptana/plugins/org.jruby_1.0.1.4620p/lib/ruby/site_ruby/1.8/rubygems.rb:76:in `active_gem_with_options'
	from /home/valberg/Aptana/plugins/org.jruby_1.0.1.4620p/lib/ruby/site_ruby/1.8/rubygems.rb:50:in `gem'
	from /usr/bin/rails:18:in `gem'