title: FQL multiquery with event CREATOR does not work anymore
body: <p>I got several iOS apps that make an FQL multiquery to get infos about events by a certain creator.</p>
  
  <pre><code>query1: "SELECT eid, uid FROM event_member     WHERE uid = %@"
  
  query2: "SELECT eid, name, venue, location, start_time, creator FROM event WHERE eid IN (SELECT eid FROM #query1) AND start_time&gt;%@ AND creator = %@" 
  </code></pre>
  
  <p>up until yesterday, March 12th 2013 this worked just fine.
  Now it returns an "unknown error".</p>
  
  <p>if i change query2 to</p>
  
  <p><code>"SELECT eid, name, venue, location, start_time, creator FROM event WHERE eid IN (SELECT eid FROM #query1) AND start_time&gt;%@"</code></p>
  
  <p>it works again, but obviously i would have to update all apps to change this query, and i would love to circumvent this.</p>
  
  <p>Is this by design?</p>