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copied!<p>When calling performFetch I got the same EXC_BAD_ACCESS signal very deep in the system stack. Changes with cache or anything did not help.</p> <pre><code>- (void)viewDidLoad { [super viewDidLoad]; MyAppDelegate *appDelegate = (MyAppDelegate *)[[UIApplication sharedApplication] delegate]; managedContext = [appDelegate managedObjectContext]; NSError *error = nil; NSFetchedResultsController *frC = self.fetchedResultsController; if (![frC performFetch:&error]) { /* */ } } </code></pre> <p>Lately I found one small snippet to add. Actually, problem was the way I had used iOS memory management (or did't had used). </p> <pre><code>- (NSFetchedResultsController *)fetchedResultsController { if (fetchedResultsController != nil) { return fetchedResultsController; } NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Asiakasrekisteri" inManagedObjectContext:managedContext]; [fetchRequest setEntity:entity]; [fetchRequest setFetchBatchSize:200]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"yritys" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:sortDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; NSFetchedResultsController *aFetchedResultsController = [[[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedContext sectionNameKeyPath:nil cacheName:nil] retain]; aFetchedResultsController.delegate = self; self.fetchedResultsController = aFetchedResultsController; [aFetchedResultsController release]; [fetchRequest release]; [sortDescriptor release]; [sortDescriptors release]; return fetchedResultsController; } </code></pre> <p>aFetchedResultsController did have very short independent life, but it was deallocated before performFetch. A <strong>retain</strong> did help and resultscontroller kept allocated.</p>

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