ios - Fatal Exception: NSObjectInaccessibleException CoreData could not fulfill a fault -

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some times application crashes while tries merge secondary thread moc main thread moc. crashes while merging deleted object main thread object.

this merging code in app delegate:

- (void)syncdidsave:(nsnotification *)savenotification {     if ([nsthread ismainthread]) {                 [self.managedobjectcontext                  mergechangesfromcontextdidsavenotification:savenotification];     } else {             [self performselectoronmainthread:@selector(syncdidsave:)               withobject:savenotification waituntildone:yes];     } }

i have attached couple of screenshots show stack trace.

main thread img; http://i41.tinypic.com/30047qx.png

secondary thread: http://tinypic.com/view.php?pic=24ql27p&s=5

any or suggestions appreciated!


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