TypeError 1034. Possibly a URLRequest/ URLLoader problem.

[senshi sentou]

Peek-a-boo, me again. I'm having some trouble with loading in a txt-file and I can't figure out why, as it works in a new .fla file as well. Here's the code in a nutshell:

goldstar.addEventListener(MouseEvent.MOUSE_DOWN, showHS);

var weekrequest:URLRequest = new URLRequest("weekscores.txt"); 
var weekloader:URLLoader = new URLLoader();

//weekloader.dataFormat = URLLoaderDataFormat.VARIABLES;
//Not sure on this one, reading in data like this is completely new to me.

weekloader.addEventListener(Event.COMPLETE, checkWeek);

function showHS(MouseEvent):void{
    weekloader.load(weekrequest);  // --> checkWeek
    trace("loaded"); //This works
}

function checkWeek(event:Event):void{
    var loader2:URLLoader = URLLoader(event.target);
        //This seems to be the problem.
        var variables:URLVariables = new URLVariables(loader2.data);
} 

This gives me the following error:

TypeError: Error #1034: Type Coercion failed: cannot convert flash.display::Stage@2cdcf191 to flash.net.URLLoader.
	at Game_fla::MainTimeline/checkWeek()
	at Game_fla::MainTimeline/launchloop()

I've also tried several different traces, but they either returned null or nothing, but there's definitely an array of numbers in the .txt file.

As always, thanks in advance.

-Patrick