title: Can no longer launch apps after upgrding to android sdk tools 20/platform sdk tools 12
body: <p>I upgraded my sdk tools and now I can no longer launch apps from Eclipse (I can still install from command line.  When I launch I get an error window and an empty device picker.  Error window says:</p>
  
  <pre><code>An error has occurred. See error log for more details.
  com.android.ddmlib.IDevice.getName()Ljava/lang/String;
  </code></pre>
  
  <p>I'm not sure what log to look for.</p>
  
  <p>DDMS sees the device ok as well.  I'm not sure whats wrong here and can't find anything on google or SO.</p>
  
  <p>Thanks</p>