title: "self.navigationItem.rightBarButtonItem" Not working
body: <p>I have the following code taken straight from the NavBar sample code from Apple.  I put this in the viewDidLoad method for a view in my app that is being presented modally, and it wont work. </p>
  
  <pre><code>UIBarButtonItem *addButton = [[[UIBarButtonItem alloc] initWithTitle:NSLocalizedString(@"AddTitle", @"")
                                                                 style:UIBarButtonItemStyleBordered
                                                                target:self
                                                                action:@selector(addAction:)] autorelease];
  self.navigationItem.rightBarButtonItem = addButton;
  </code></pre>
  
  <p>Any Suggestions?</p>