URLLoader not working in Photoshop panel?

Question

I have started creating a panel plugin for Photoshop, but I seem to have run into a road block. I am using a simple URLLoader to grab some info from the internet, but when I load the plugin it never seems to be called nor does it fail. Here is an example of what I am trying to do.
var url:String = "http://www.mySite.com/page.php";
var urlR:URLRequest = new URLRequest(url);
urlL = new URLLoader();
urlR.contentType = "text/plain";
urlR.data = "var=something";
urlL.addEventListener(Event.COMPLETE, onCompleted);
urlL.addEventListener(IOErrorEvent.IO_ERROR, onFault);
urlL.load(urlR);
Is there something I am missing here?
I have checked the obvious things like:
Verified "Allow Extensions to Connect to the Internet" is checked in Preferences/Plugin-ins/
Added Security.allowDomain(url); and Security.allowInsecureDomain(url);
Even added the swf file location to the flash global settings.
All to no aval. Any help would be appreciated. It looks like help on panels outside of the flex environment is pretty scares atm.
Thanks

Answer 1

Both onComplete and OnFault contain a single command that will cause an alert in Photoshop. For example;
CSXSInterface.instance.evalScript("alert", "completed");
CSXSInterface.instance.evalScript("alert", "fault");