Core Data opens files as empty

FROM : Jamie Phelps
DATE : Mon Mar 03 00:19:31 2008

I'm sorry if this has been covered, but I searched the archives (http://moourl.com/x50hf
) and didn't find any answers.

I just went through the Core Data tutorial here: http://developer.apple.com/cocoa/coredatatutorial/index.html
  Everything went well except that when I save a document and then 
open it back up, it displays as empty. If I save a document as XML, it 
still exhibits the blank document behavior but if I open it in 
TextMate, I can see that the document actually contains the data I 
saved.

Anyone have experience and/or a solution for this issue?

Thanks,
Jamie