title: dev_appserver.py doesn't load appengine_config.py
body: <p>I have an App Engine app running locally using <code>dev_appserver.py</code>. In the app directory I have the standard <code>appengine_config.py</code> that is supposed to execute on every request made to the app. In the past it used to execute the module, but suddenly it stopped doing it.</p>
  
  <p>In another app runs on the same machine it works fine.</p>
  
  <p>I checked with Process Monitor to see if the file is loaded from another location, but it's not (I can see the other app's file being loaded).</p>
  
  <p>Any ideas why <code>appengine_config.py</code> is not executed?</p>