iPhone Development - CoreData runtime error

Posted by Mustafa on Stack Overflow See other posts from Stack Overflow or by Mustafa
Published on 2010-04-07T12:23:19Z Indexed on 2010/05/09 6:28 UTC
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iphone

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nsfetchedresultscontrolle

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core-data

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error

I'm facing a strange CoreData issue. Here's the log:

2010-04-07 15:59:36.913 MyProject[263:207] <MyEntity: 0x180370> (entity: MyEntity; id: 0x17e890 <x-coredata://0F55C533-41BD-4F09-9CCA-0CB304CAB065/MyEntity/p380> ; data: <fault>)
2010-04-07 15:59:36.918 MyProject[263:207] *** Terminating app due to uncaught exception 'NSObjectInaccessibleException', reason: 'The NSManagedObject with ID:0x17e890 <x-coredata://0F55C533-41BD-4F09-9CCA-0CB304CAB065/MyEntity/p380> has been invalidated.'

I have a hierarchy of UITableViewControllers that use NSFetchedResultsController to populate the table, and when a particular row is selected, the detail view is shown.

UITableView (MyMainEntity)
UITableView (MyEntity)
UITableView (MyEntity) detail view

Both MyMainEntity UITableView and MyEntity UITableView use NSFetchedResultsController to show the records. Sometimes it crashes when i'm scrolling the tableView, and sometimes it crashes when i try to open the detail view. I can navigate to the MyEntity detail view multiple times before application crashes.

What does this error mean? and how can i fix it!?

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