title: Error in accessing all rubygem
body: <p>Whenever I'm trying to access a rubygem, i'm getting an error. E.g. with <code>rails -v</code> I get the following error:</p>
  
  <pre><code>/Users/sayanee/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in `to_specs': Could not find railties (&gt;= 0) amongst [bigdecimal-1.1.0, io-console-0.3, json-1.5.4, minitest-2.5.1, rake-0.9.2.2, rdoc-3.9.4] (Gem::LoadError)
      from /Users/sayanee/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:256:in `to_spec'
      from /Users/sayanee/.rvm/rubies/ruby-1.9.3-p125/lib/ruby/site_ruby/1.9.1/rubygems.rb:1231:in `gem'
      from /Users/sayanee/.rvm/gems/ruby-1.9.3-p125/bin/rails:18:in `&lt;main&gt;'
      from /Users/sayanee/.rvm/gems/ruby-1.9.3-p125@global/bin/ruby_noexec_wrapper:14:in `eval'
      from /Users/sayanee/.rvm/gems/ruby-1.9.3-p125@global/bin/ruby_noexec_wrapper:14:in `&lt;main&gt;'
  </code></pre>
  
  <p>I'm on MAC OSX Lion with the following configuration:</p>
  
  <pre><code>ruby -v
  ruby 1.9.3p125 (2012-02-16 revision 34643) [x86_64-darwin11.3.0]
  
  rvm -v
  rvm 1.16.6 (stable) by Wayne E. Seguin &lt;wayneeseguin@gmail.com&gt;, Michal Papis &lt;mpapis@gmail.com&gt; [https://rvm.io/]
  </code></pre>