title: Black screen when pushing view controller
body: <pre><code>UIStoryboard *storyboard = self.navigationController.storyboard;
  DetailTrickEnter *viewController = [storyboard instantiateViewControllerWithIdentifier:@"DetailTrickEnter"];
  [self.navigationController pushViewController:viewController animated:YES];
  </code></pre>
  
  <p>'Storyboard () doesn't contain a view controller with identifier 'DetailTrickEnter''</p>
  
  <p>In the storyboard there is a viewcontroller with name I checked it very precisely.
  Help with it.thanks</p>