title: Failed to read values in CFPrefsPlistSource iOS 10
body: <p>I've updated my Xcode 8 to beta 2 today and I'm trying to share data between App and Today Extension. I'm facing with this log warning:</p>
  
  <blockquote>
    <p>2016-07-08 18:00:24.732472 ProjetctX[941:42801] [User Defaults] Failed
    to read values in CFPrefsPlistSource&lt;0x1700f1280> (Domain:
    group.x.p.t.o, User: kCFPreferencesAnyUser, ByHost: Yes, Container:
    (null)): Using kCFPreferencesAnyUser with a container is only allowed
    for System Containers, detaching from cfprefsd</p>
  </blockquote>
  
  <p>Anyone can help me?</p>