title: Android getInboxIntent empty
body: <p>I try to develop a turn based game but I have a problem. 
  When I use</p>
  
  <pre><code>Intent intent = Games.TurnBasedMultiplayer.getInboxIntent(getApiClient());
  startActivityForResult(intent, RC_LOOK_AT_MATCHES);
  </code></pre>
  
  <p>the inbox is always empty whereas if I check from google app I see current games and invitations.</p>
  
  <p>I get this message in error logs:</p>
  
  <blockquote>
    <p>Could not find class 'android.app.AppOpsManager', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.zza</p>
  </blockquote>
  
  <p>Any ideas of the problem?</p>