title: django - nginx+fastcgi --> Unhandled Exception (after upgrade from Django 1.2.4 to Django 1.3)
body: <p>I just upgraded from django 1.2.4 to 1.3. </p>
  
  <p>I'm using <strong>nginx</strong> in conjunction with <strong>fastcgi</strong> and for some reason every time when I access a page I get this error:</p>
  
  <pre><code>Unhandled Exception
  
  An unhandled exception was thrown by the application.
  </code></pre>
  
  <p>Any ideas what the problem might be?</p>