title: Rails rack 1.0 error
body: <p>I have this error when I try to start script/server:</p>
  
  <pre><code>/opt/ruby1.8/lib/ruby/site_ruby/1.8/rubygems.rb:827:in `report_activate_error': RubyGem version error: rack(1.0.0 not ~&gt; 1.0.1) (Gem::LoadError)
   from /opt/ruby1.8/lib/ruby/site_ruby/1.8/rubygems.rb:261:in `activate'
   from /opt/ruby1.8/lib/ruby/site_ruby/1.8/rubygems.rb:68:in `gem'
   from /opt/ruby1.8/lib/ruby/gems/1.8/gems/actionpack-2.3.5/lib/action_controller.rb:34
   from /opt/ruby1.8/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
   from /opt/ruby1.8/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
   from /opt/ruby1.8/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
   from /opt/ruby1.8/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in `new_constants_in'
   from /opt/ruby1.8/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in `require'
   from /opt/ruby1.8/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:2
   from /opt/ruby1.8/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
   from /opt/ruby1.8/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
   from script/server:3
  </code></pre>
  
  <p>It's very annoying because, I did:</p>
  
  <pre><code>Successfully installed rack-1.1.0
  1 gem installed
  Installing ri documentation for rack-1.1.0...
  Installing RDoc documentation for rack-1.1.0...
  </code></pre>
  
  <p>But it always says that error. I have Rails 2.3.5 but I don't think the error is Rails related, but more like my server-related lol.</p>
  
  <p>Thanks for help!</p>