title: No call stack on Exception in xCode 4
body: <p>I got an exception I can't back trace. I would like to know where the exception is thrown. Is there an option for that in xCode 4.2? As you can see the call stack is not much of a help. The only thing I know is that Iam trying to access an item in a NSArray at a faulty index.</p>
  
  <p>All ideas are welcomed.
  Thanks!</p>
  
  <p><img src="https://i.stack.imgur.com/JZVML.png" alt="enter image description here"></p>