title: PIL error: The _imaging C module is not installed
body: <p>I have PIL (Python imaging library) installed.</p>
  
  <p>When I run Python:</p>
  
  <pre><code>import PIL
  import Image
  import _imaging
  </code></pre>
  
  <p>I don't get errors. However, when running my app, it raises</p>
  
  <pre><code>The _imaging C module not installed
  </code></pre>