title: Ruby require problem
body: <p>I'm trying to get the sanitize gem up and running. I've installed sanitize and nokogiri 1.3.3 as required, but when I try and use it in my application_helper.rb:</p>
  
  <pre><code>require 'rubygems'
  require 'sanitize'
  </code></pre>
  
  <p>I get the error:</p>
  
  <pre><code>MissingSourceFile 
  no such file to load -- sanitize
  RAILS_ROOT: C:/Ruby/GWS
  
  (stack trace)
  
  This error occurred while loading the following files:
     sanitize
  </code></pre>
  
  <p>I also get the error if I require nokogiri, but I don't if I require another gem such as rmagick.</p>
  
  <p>I've tried uninstalling and reinstalling both nokogiri and santitize, but with no luck.</p>
  
  <p>Update:
  If I run the require command from irb I get an error about racc not being found. If I try to install racc I get the error message at <a href="https://stackoverflow.com/questions/1136548/error-while-installing-ruby-gem">error while installing ruby gem</a></p>