title: Android appcompat-v7: ActionBar$NavigationMode not found
body: <p>Since I've upgraded to appcompat-v7 v21, I get the following compilation errors:</p>
  
  <p>Exception in thread "pool-117-thread-1" com.sun.tools.javac.code.Symbol$CompletionFailure: class file for android.support.v7.app.ActionBar$NavigationMode not found.</p>
  
  <p>Could this be related to <a href="https://groups.google.com/forum/#!topic/scala-on-android/zVhoIBqfzZk" rel="nofollow">https://groups.google.com/forum/#!topic/scala-on-android/zVhoIBqfzZk</a>?</p>
  
  <p>In case this is relevant: I'm using Android Transfuse.</p>