title: Vim Command-T plugin error: could not load the C extension
body: <p>I'm trying to install the Command-T plugin.</p>
  
  <p>I compiled vim following the instructions in this comment: <a href="https://stackoverflow.com/questions/3794895/installing-vim-with-ruby-support-ruby/3851435#3851435">Installing vim with ruby support (+ruby)</a></p>
  
  <p>So now there's the +ruby flag, but still when I try to use the plugin I get this error:</p>
  
  <pre><code>command-t.vim could not load the C extension
  Please see INSTALLATION and TROUBLE-SHOOTING in the help              
  For more information type:    :help command-t
  </code></pre>
  
  <p>I have ruby on my system:</p>
  
  <pre><code>&gt; ruby -v
  &gt; ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
  </code></pre>
  
  <p>suggestions?</p>