title: java.lang.NoClassDefFoundError: android.support.v7.mediarouter.R$string
body: <p>Iam building an Application which is using the support libraries.</p>
  
  <p>There is no compilation errors on my project but when I run I see this message in the logcat :</p>
  
  <p>java.lang.NoClassDefFoundError: android.support.v7.mediarouter.R$string</p>
  
  <p>Apparently a solution to that was to run an update on the libraries project which i did using the android update command tool, but it did not help.</p>
  
  <p>please click <a href="http://i.imgur.com/zE8athS.png" rel="nofollow">HERE</a> for the full logcat log</p>