Evt.target.data freezes

So I have a bit of an odd error.

function xmlOnLoad(evt:Event):void
    var xmlData:XML = new XML();
    xmlData.ignoreWhitespace = true;
    xmlData = XML(evt.target.data); //This line here
    //for each(var userElement in evt.target.data.users.user)


The line that says xmlData = XML(evt.target.data) freezes my program. Nothing gets past that line. I have no idea what’s causing this problem…

What I mean by nothing gets past it is that anything anfter that line doesn’t get executed. I put the userArea.addChild(userList) before all over the function to determine where the problem was and it’s only after that line that my userList was no long showing up.