Debugging "NSManagedObject with ID has been invalidated"
Debugging "NSManagedObject with ID has been invalidated"
- Subject: Debugging "NSManagedObject with ID has been invalidated"
- From: Gideon King <email@hidden>
- Date: Thu, 18 Feb 2010 02:34:50 +1000
Hi all, I am getting the message "The NSManagedObject with ID (whatever) has been invalidated" when I try to save a new document in my application. It is just a plain blank document that I have not made any changes to.
This did not happen when I saved my document in my build from one week ago, and I have been through every change I have made since then and can't for the life of me see what I may have changed that would cause this problem all of a sudden.
Is it normal for my managed object to turn to a fault when I save it for the first time? I am using a subclass of NSAtomicStore for the backend storage.
Can anybody suggest a good way of debugging this issue? I see a number of questions similar to this on the web but have not found any suggestions that help me to track it down.
Gideon
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