CoreData issue: -[NSManagedObject setValue:]: unrecognized selector sent to instance

Question

I just started with CoreData yesterday, and I\'m going crazy :( I created a project that uses CoreData (ticked the box -use CoreData). Created the entities, and then created the

Answer 1

I had the same problem and I found a not-so-elegant solution. It seems that

[NSEntityDescription insertNewObjectForEntityForName:@"myEntity" inManagedObjectContext:myManagedObjectContext];

creates an old version of myEntity that does not have the attributes of the most up-to-date version. So I changed the name of myEntity in the old version of the model to myEntityOld and I did not get the error any more.

I suspect that there is an elegant way to do the same thing in XCode by setting a property of NSManagedObject or NSEntityDescription.