title: STORYBOARD EXCEPTION - Storyboard doesn't contain a view controller with identifier
body: <p>I am currently developing an iOS application for both iPhone and iPad. I'm trying to show a NavigationController to make a module that shows files. In an iPhone it works just fine, but I can´t get it to work in iPad. </p>
  
  <p>I'm getting the following error: </p>
  
  <pre><code>'Storyboard (&lt;UIStoryboard: 0x919b200&gt;) doesn't contain a view controller with identifier 'FilesNavigation''
  </code></pre>
  
  <p>and this is the code: </p>
  
  <pre><code>case 10: // Files
  {
    UINavigationController *navigationController = [storyboard instantiateViewControllerWithIdentifier:@"FilesNavigation"];
  
    FilesViewController *filesViewController = [storyboard instantiateViewControllerWithIdentifier:@"Files"];
  
    [navigationController pushViewController:filesViewController animated:YES];
  
    self.slidingViewController.topViewController = navigationController;
  
    break;
  }
  </code></pre>
  
  <p>And in my storyboard I have already set the Storyboard ID for the navigation controller.</p>
  
  <pre><code>&gt;##Custom Class 
  &gt;Class: UINavigationController
  &gt;##Identity
  &gt;Storyboard ID: FilesNavigation
  </code></pre>
  
  <p>I used this code for another case on the switch/case block for other module and it works for iPad too, its the first time that I have this error.</p>