Preloader displays "Infinity%" on actual web url?

My preloader works fine in "simulated download" in the "test movie" window in Flash AS3, but when I upload it onto my server, all I get is the preloader screen with an "infinity%."

Here is my code:

stop();

var preLoaderPercent: Number
this.loaderInfo.addEventListener(Event.COMPLETE, loadComplete);
this.loaderInfo.addEventListener(ProgressEvent.PROGRESS, loadProgress);

function loadComplete(e:Event) {
    // load complete - remove listeners and move on
    this.loaderInfo.removeEventListener(Event.COMPLETE, loadComplete);
    this.loaderInfo.removeEventListener(ProgressEvent.PROGRESS, loadProgress);
    play();
}

function loadProgress(e:ProgressEvent):void {
    preLoaderPercent = e.bytesLoaded / e.bytesTotal;
    // Put code here to update your display
var total_bytes:Number = this.stage.loaderInfo.bytesTotal;
var loaded_bytes:Number = this.stage.loaderInfo.bytesLoaded;
preLoader.preLoaderFill.scaleY = loaded_bytes/total_bytes;
preLoader.bytesPercent.text = Math.floor((loaded_bytes/total_bytes)*100) + "%";

}