Да использую Complete вот так:

Код AS3:
function loadXML(file:String):void{
var xmlLoader:URLLoader = new URLLoader();
xmlLoader.load(new URLRequest(file));
xmlLoader.addEventListener(Event.COMPLETE, comleteLoading);
}
function comleteLoading(e:Event):void{
xml = XML(e.target.data);
xmlList = xml.children();
trace(xml);
removeChild(completeLoad);
loadMenus();
}