I had an issue where the list was not displaying my submitted apps.  Originally I had placed it in a panoramaitem, inside of a stackpanel.  However, once I replaced the stackpanel with a grid the list updated correctly.  I highly recommend using this as it's simple to use.  

 

Is there a way to allow the publishername to be databound?  I find if I override the DataContext property things don't work so I have the name hardcoded.