title: Rails + rubygems + rvm disaster/confusion
body: <p>I'm not sure exactly what I did but I messed up the Ruby/gem harmony trying to get an older 2.3.5 Rails app working on my system.</p>
  
  <p>I'm currently using Ruby 1.9.2-p0 and rubygems 1.5.7. I've tried the newest one 1.8.2 but it just generates more warnings. I use these alongside of RVM.</p>
  
  <p>I get "can't convert Symbol into Integer" when trying to boot a 2.3.x Rails app no matter what version of rubygems I run. I tried 1.5.7, 1.7.2, and 1.8.2.</p>
  
  <pre><code>$ script/server
  =&gt; Booting WEBrick
  =&gt; Rails 2.3.5 application starting on http://0.0.0.0:3000
  path/.rvm/gems/ruby-1.9.2-p0/gems/rails-2.3.5/lib/rails/gem_dependency.rb:51:in `[]': can't convert Symbol into Integer (TypeError)
  </code></pre>
  
  <p>Any idea how I can get my system back in harmony?</p>