title: core data can't find model for source store - what did my old store look like?
body: <p>So first, <a href="https://stackoverflow.com/questions/1830079/iphone-core-data-automatic-lightweight-migration">this question</a> helped a lot with getting on the right track toward working core data versioning. So I added a new version for my model, and now I'm trying to get the automatic migration working, but I have a problem. I can't remember what my old version looked like! I'm trying to run the app on my phone, but I've been using the simulator for a while and made a few changes to the schema. The version on the phone is from quite a while ago. So each time I try to modify the old version to what I think is on the phone, but I still get the "can't find model for source store" error. I'm guessing it's because I got the old schema wrong.</p>
  
  <p>Is there any way for me to figure out what the schema looks like on the phone? Barring that, how could I just wipe the sqlite store off the phone so I can start over from version 1?</p>