CS5, AS3 - Preloader

Question

I've been searching for guides/tutorials, basically any sort of help in making a preloader for a game. Also looked through previous posts on this forum.
Whenever I have a preloader made without any errors and I click test movie (ctrl-enter), it skips the preloader and goes straight to my game's menuscreen. Fair enough, so I click simulate download, the window turns white, after that it turns grey with 3 or 4 dots blinking, as if it were a preloader, except not mine, after a while it goes into my games menuscreen again, completely bypassing the preloader.
A walkthrough for a simple preloader (just a percentage going from 0 to 100), some code I can copy-paste, anything to make it work, I've tried all I can think of.
/beg for help.

Answer 1

that code's in frame 1 of your main timeline, correct?  if yes, copy the trace output using the following and paste it here:
stop();
trace(this.currentFrame,this);
import flash.events.ProgressEvent;
import flash.events.Event;
this.loaderInfo.addEventListener(ProgressEvent.PROGRESS, onLoading);
this.loaderInfo.addEventListener(Event.COMPLETE, onComplete);
function onLoading(evt:ProgressEvent):void {
    var loaded:Number = evt.bytesLoaded / evt.bytesTotal;
    loadbarText.text = "LOADING: " + (loaded*100).toFixed(0) + "%";
trace(loadbarText.text);
function onComplete(event:Event):void {
    this.loaderInfo.removeEventListener(ProgressEvent.PROGRESS, onLoading);
    this.loaderInfo.removeEventListener(Event.COMPLETE, onComplete);
    loadbarText.visible = false;
    gotoAndPlay(2);