iphone - could not locate an NSManagedObjectModel for entity name -

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This is the toggle-type code for the project, the core data code is almost identical as found in Apple's CoreDetBooks sample, but When I click on the link to add app accidents with entityForName: one for the entity name 'project' on the line starting with newProjectController.project 

 Could not find NSManagedObjectModel.  - (IBAction) toggleAddProject {NewProjectViewController * newProjectController = [[NewProject Visual Controller Alok] initWithStyle: UITableViewStyleGrouped] autorelease]; // Create a new managed object context for the new project - set its consistent store coordinator to the same order as the faked result is from the context of the controller NSManagedObjectContext * to connectcontent = [[NSManagedObjectContext alloc] init]; Self.addingManagedObjectContext = add syntax; [Managed Object Contact Set Setsstantstore Coordinator: [[Proportional Results Controller Managed Object Contains] Continuous Store Coordinator]]; NewProjectController.project = (Project *) [NSEntityDescription insertNewObjectForEntityForName: @ Managed object contexts in "Project": addcontent]; [Add content release]; UINavigationController * addNewNavigationController = [[UINavigationController alloc] initWithRootViewController: newProjectController]; [Self. Navigation Controller Present Model View Controller: Animated Ad-Neutralization Controller: Yes]; [EdinNavigation Controller Release]; }

Everything has been synthesized, the project unit is present. I can not understand why this crash is why most people may be able to fix this error, either by default in the method itself or by default: 

  if (managedObjectContext == zero) {ManagedObjectContext = [[CoreDataBooksAppDelegate *] [[UIApplication ShareApp]]] ManagedAbjectCourt;]; }

Thanks to any help for my app reps when it's modified, thanks for any help.

There are only a few possible sources in this error:

  1. entity name Typo in
  2. Non-Managed Object Reference Object
  3. Failure to add a model that contains the unit is constantly referred to in the store, uses references.
  4. Failure to accurately add store in context.

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