Context does not save the changes with error 1550

Question

I\'m trying to update an entity and save the changes. I\'m getting always the following error:

The operation couldn’t be completed. (Cocoa error 1550.)
         


        

Answer 1

Cocoa error 1550 means you are having a "dangling" pointer, more specifically a reference to a relationship that points to nowhere... I would assume you might be getting a nil back from one of the existinObjectWithID methods?