title: Xcode Today Extension stuck on "Failed to inherit CoreMedia permissions" error
body: <p>i'am trying to add an app extension to my project (Today Extension). </p>
  
  <p>Things that i've made so far: </p>
  
  <ol>
  <li>Enable "App Groups" from both main application and extension capabilities.</li>
  <li>Checked that both targets "Team" profiles are valid. (even deleted them from provisioning portal and let xcode to receated them)</li>
  <li>Checked from provisioning portal that both app id's have correct groups selected. </li>
  <li>Deleted everything from provisioning portal, and receated everthing through xcode. </li>
  </ol>
  
  <p>Everything looks ok, both targets have "app groups" enabled and selected same app group id's, and no error visible. </p>
  
  <p>btw. I 've tried both on normal and beta (6.2) versions of xcode. Still no luck..</p>