On Aug 23, 2010, at 09:33, Ayers, Joseph wrote:
> NSError *error = nil;
> if (![[self managedObjectContext] save: &error]) {
> NSLog(@"Error while saving\n%@",
> ([error localizedDescription] != nil) ? [error localizedDescription]:
> @"Unknown Error");
>
> Results in:
>
> 2010-08-22 20:31:32.385 Roboplasm[3508:a0f] Error while saving
> TapeList is a required value.
The error means that some entity is defined to have a to-one relationship to
TapeList, and the relationship property is defined to be non-optional, but in
some object the relationship is actually nil.
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