title: New Silverlight app doesn't generate XAP
body: <p>I have created a new Silverlight app and it created a XAp file under the CLientBin on the Server side.</p>
  
  <p>However after copying an existing project into the same folder and adding it to the solution, the XAP file is not being generated for the this assembly.  </p>
  
  <p>What am I missing?  </p>
  
  <p>Many Thanks,</p>