Core Data Relationships cause save error after delete

Question

This question is probably a long shot. I can\'t figure out the errors I\'m getting on my core data project when I save after I delete an entity.

I have two main enti

Answer 1

I was encountering a very similar issue with cascading deletes, on non optional parent-child relationships. It was very confusing because I thought the parent relationship delete rule was set to cascade. It turns out that the data model editor in Xcode was not saving the delete rule. I would set it to Cascade, go to a different view and come back and it would be set to nullify again. I had to restart Xcode and set the delete rule to cascade. After I did this everything worked.

So if anyone else encounters this issue double check that Xcode is saving your delete rules before delving into more complicated solutions.

By the way I'm using core data on iOS with Xcode 5's data model editor.