title: EmptyIndexError - Index 'MAIN' does not exist in <whoosh.filedb.gae.DatastoreStorage object at 0x0667F130>
body: <p>I am testing out Whoosh on a project by following their quickstart guide:</p>
  
  <p><a href="http://whoosh.readthedocs.org/en/latest/quickstart.html" rel="noreferrer">http://whoosh.readthedocs.org/en/latest/quickstart.html</a></p>
  
  <p>The only difference is, my project is running off of Google App Engine, so instead of:</p>
  
  <pre><code>ix = create_in("indexdir", schema)
  </code></pre>
  
  <p>I have:</p>
  
  <pre><code>from whoosh.filedb.gae import DatastoreStorage
  ix = DatastoreStorage().create_index(schema)
  </code></pre>
  
  <p>And I get:</p>
  
  <pre><code>EmptyIndexError -  Index 'MAIN' does not exist in &lt;whoosh.filedb.gae.DatastoreStorage object at 0x0667F130&gt;
  </code></pre>