Here's the error that pops when trying to run it on the page...

Code:
TypeError: Error #1010: A term is undefined and has no properties.
	at twitter2_fla::MainTimeline/processXML()
	at flash.events::EventDispatcher/dispatchEventFunction()
	at flash.events::EventDispatcher/dispatchEvent()
	at flash.net::URLLoader/onComplete()
It looks like a variable is being overlooked in the processXML function. Without seeing your code, I can't help much beyond that.