title: Android Eclipse Error "Android Packaging Problem"
body: <p>I am getting an error in my Problems tab for my Android Project in Eclipse.  The error is "<strong>Android Packaging Problem</strong>" with an Unknown location.   </p>
  
  <p><strong>Unknown Error NullPointerException</strong></p>
  
  <p>I cannot determine what this problem is.  My project was working a few hours ago.  The only change I made was to add a <strong><em>public interface ITrackDao</em></strong>  to my project and implement it.  There are no errors associated with this.</p>
  
  <p>I am not even sure where to begin to look.  I cannot launch the application.  Can someone give me an idea on what area I can look into?
  Thanks
  Peter</p>