title: Unrecognized selector sent to instance when calling back button programmatically
body: <p>I'm viewing a detail view when clicking on a record from the table.  When I call the back button from the detail view using </p>
  
  <pre><code>- (IBAction)loadDispensary 
  {
      [self.navigationController popViewControllerAnimated:YES];
  }
  </code></pre>
  
  <p>I get the unrecognized selector error.</p>
  
  <p>I've tried pushing the the detail controller the following two ways.</p>
  
  <pre><code>Push type 1
  detailViewController *detailView = [[self storyboard] instantiateViewControllerWithIdentifier:@"detailView"];
  detailView.strain = self.selectedStrain;
  [self.navigationController pushViewController:detailView animated:YES];
  
  Push type 2
  [self performSegueWithIdentifier: @"detailSegue" sender: self];
  //Set the strain on the prepareForSegue
  </code></pre>