title: Flex Event Listener Callback Not Firing
body: <p>Maybe you can help point me in the right direction on this.  In our app, I am periodically noticing that a particular event handler is not firing.  99% of the time, it works fine, but, every so often, it just dies.   How can I find out whats happening?  Is the DispatchEvent() not happening/working somehow?  Is my listener still listening?  Did something else catch the event, and not pass it along so that the 'right' listener can get to it ?</p>
  
  <p>Here's a little bit of the code...
  <img src="https://i.stack.imgur.com/w13OJ.png" alt="code"></p>
  
  <p>Thats a somewhat pruned down version of what the real code is, but I don't think I trimmed out anything important.  The key, as I see it is that we fire up the params dialog, then start to listen for the closed event.  Then, we show the param dialogs close function.  What happens when it fails is that the trace message "caught close event.." is never generated, and, consequently, the closeHandler is not getting called at all.</p>
  
  <p>I don't see anything out of place there, do you? </p>
  
  <p>So, what tools are at my disposal to track this little bugger down?</p>
  
  <p>Thanks!</p>