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copied!<pre><code>-(void)populateDB { NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator]; NSManagedObjectContext *context; [....] } </code></pre> <p>The Problem might be [self persistentStoreCoordinator]... Do you have a function called "persistentStoreCoordinator" ? If not, you have to write the function. </p> <p>[EDIT]</p> <pre><code>- (NSPersistentStoreCoordinator *)persistentStoreCoordinator { @synchronized (self) { if (__persistentStoreCoordinator != nil) return __persistentStoreCoordinator; NSString *defaultStorePath = [[NSBundle mainBundle] pathForResource:@"myProject" ofType:@"sqlite"]; NSString *storePath = [[[self applicationDocumentsDirectory] path] stringByAppendingPathComponent: @"myProject.sqlite"]; NSError *error; if (![[NSFileManager defaultManager] fileExistsAtPath:storePath]) { if ([[NSFileManager defaultManager] copyItemAtPath:defaultStorePath toPath:storePath error:&error]) NSLog(@"Copied starting data to %@", storePath); else NSLog(@"Error copying default DB to %@ (%@)", storePath, error); } NSURL *storeURL = [NSURL fileURLWithPath:storePath]; __persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]]; NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; if (![__persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:options error:&error]) { NSLog(@"Unresolved error %@, %@", error, [error userInfo]); abort(); } return __persistentStoreCoordinator; } } </code></pre> <p>Is this Code in another File ? Maybe you forgot to import the .h-file, where persistentStoreCoordinator is declared in.</p>

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