title: Error message: uninitialized constant Rails::Initializer::MemCache
body: <p>I've installed just about every library/gem that I could find for memcached/memcache, but everytime I attempt to run my application I get this error:</p>
  
  <pre><code>Error message:
  uninitialized constant Rails::Initializer::MemCache
  
  Exception class:
  NameError
  </code></pre>
  
  <p>I have tried $ telnet localhost 11211 and memcached is definitely running. Any ideas?</p>
  
  <p>(I'm running Apache2/Passenger)</p>