title: NSManagedObjectModel mergedModelFromBundles error
body: <p>I'm working with Core Data and having a lot of trouble's getting data into the database right off the start of my app.<br>
  Below is some of the code I've grabbed from a tutorial I followed.
  The point where I get the SIGABRT is outlined below.
  Any suggestions or help is appreciated
  Thanks</p>
  
  <pre><code>//THIS FUNCTION IS CALLED AFTER MY APP DID FINISHING LOADING IN THE 
  //    IN THE APP DELEGATE
  -(void)loadData
  {
      NSManagedObjectContext *context = [self managedObjectContext];
  
      NewModel *newModel = (NewModel *)[NSEntityDescription insertNewObjectForEntityForName:@"NewModel" inManagedObjectContext:context];
  
      //ADD MORE DATA TO ENTITY
  }
  
  /**
   Returns the managed object context for the application.
   If the context doesn't already exist, it is created and bound to the persistent store coordinator for the application.
   */
  - (NSManagedObjectContext *) managedObjectContext {
  
      if (managedObjectContext != nil) {
          return managedObjectContext;
      }
  
      NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator];
      if (coordinator != nil) {
          managedObjectContext = [[NSManagedObjectContext alloc] init];
          [managedObjectContext setPersistentStoreCoordinator: coordinator];
      }
      else
      {
          NSLog(@"Error");
      }        
      return managedObjectContext;
  }
  
  
  /**
   Returns the managed object model for the application.
   If the model doesn't already exist, it is created by merging all of the models found in the application bundle.
   */
  - (NSManagedObjectModel *)managedObjectModel {
  
      if (managedObjectModel != nil) {
          return managedObjectModel;
      }
  /**********************************************************/    
      //  SIGABRT HAPPENS IN THE NEXT LINE OF CODE
  /**********************************************************/    
      managedObjectModel = [NSManagedObjectModel mergedModelFromBundles:nil];    
      return managedObjectModel;
  }
  
  /**
   Returns the persistent store coordinator for the application.
   If the coordinator doesn't already exist, it is created and the application's store added to it.
   */
  - (NSPersistentStoreCoordinator *)persistentStoreCoordinator
  {
      if (persistentStoreCoordinator != nil) {
          return persistentStoreCoordinator;
      }
  
      NSString *storePath = [ [self applicationDocumentsDirectory] stringByAppendingPathComponent:@"NewModel.db"];
      NSURL *storeUrl = [NSURL fileURLWithPath:storePath];
  
      // Put down default db if it doesn't already exist
      NSFileManager *fileManager = [NSFileManager defaultManager];
      if (![fileManager fileExistsAtPath:storePath]) {
          NSString *defaultStorePath = [[NSBundle mainBundle] pathForResource:@"LeagueModel" ofType:@"sqlite"];
          if (defaultStorePath) {
              [fileManager copyItemAtPath:defaultStorePath toPath:storePath error:NULL];
          }
      }
  
      NSError *error = nil;
      persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
      if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:nil error:&amp;error]) {
          NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
          abort();
      }    
  
      return persistentStoreCoordinator;    
  }
  
  /**
   Returns the path to the application's Documents directory.
   */
  - (NSString *)applicationDocumentsDirectory {
      return [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
  }
  </code></pre>