title: Aptana Configuration : The interpreter configured does not exist in the filesystem
body: <p>Pretty much all said in the title.
  I've updated to the last version of <code>Aptana</code>(on Windows), and now my interpreter does not work.
  I've recreated the <code>PYTHONPATH</code> Variable, deleted and reconfigured the python interpreter in <code>Aptana</code>, deleted and recreated it in my project, still not working...</p>
  
  <p>It gives me following error: </p>
  
  <pre><code>The interpreter configured does not exist in the filesystem
  </code></pre>
  
  <p>And all kinds of error like :</p>
  
  <pre><code>Description Resource        Path        Location    Type
  Undefined variable: None    models.py   line 48     PyDev Problem
  </code></pre>
  
  <p>Worst part is, I work on a <code>django</code> app. and I can launch it fine, the only problem resides in Aptana.
  Any clue?</p>