title: NSNotification not being sent when postNotificationName: called
body: <p>I'm trying to get one instance of using <code>NSNotificationCenter</code> with <code>addObserver</code> and <code>postNotificationName</code> but I can't work out why it won't work.</p>
  
  <p>I have 2 lines to code to add the observer and send the message in 2 different classes</p>
  
  <pre><code>[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(newEventLoaded:) name:@"Event" object:nil];
  </code></pre>
  
  <p>and</p>
  
  <pre><code>[[NSNotificationCenter defaultCenter]postNotificationName:@"Event" object:self];
  </code></pre>
  
  <p>If I set the name to <code>nil</code> it works fine becuase it's just a broadcast, when i try and define a notification name the messages never get through.</p>