title: The hierarchy of the type activity is inconsistent when extending ActionBarActivity
body: <p>Hi I've got new v7 support library with appcompat actionbar and when I want to extend from ActionBarActivity as documented <a href="http://developer.android.com/reference/android/support/v7/app/ActionBarActivity.html" rel="noreferrer">here</a>, eclipse show me this error</p>
  
  <pre><code>The hierarchy of the type testActivity is inconsistent
  </code></pre>
  
  <p>and when I move my courser on ActionBarActivity class it says</p>
  
  <pre><code>The type android.support.v4.app.TaskStackBuilder$SupportParentable cannot be resolved. It is indirectly referenced from required .class files
  </code></pre>
  
  <p>now how can I Solve this issue?</p>