Core-Data iPhone: could not locate an NSManagedObjectModel

Question

I am using Apple\'s CoreDataBooks sample project as a learning aid for core data.

I modified the app so that when the app loads I show a menu page first - not the B

Answer 1

During my development, I could not find Entities that I added later on. What worked for me: (Basically a sanity-tip :-)

Uninstall the App EVERY TIME you change the Data Model!

The Data Model is cached by Core Data between installs, to make sure the integrity stays in tact. Delete the App from the simulator / iPhone to be able to test your changes.

PS: does anyone know how to do that automatically?