Preloader issues when loading an external .swf using Loader

programming flash
1

Hellos!

I am making an “interface” which loads an external swf file onto ths stage and plays it from there. I have a preloader which is supposed to “colour” a logo while the flash loads(using a mask which is scaled to the loaded % of the file).

My problem is that it doesn’t do anything until the whole external file is loaded. Then, the preloader flashes once and the content is played. I have no idea what I’m doing wrong, and it’s driving me insane!

Here’s my code:

import flash.events.Event;

stop();

/*******************load flash from external file*************** */
try
{
    var bLoaded:Number = 0;    // current number of bytes loaded
    var bTotal:Number = 0;    // total size of file
    var percentageLoaded:Number = 0;
    
    Security.allowDomain("http://www.magicstorybox.co.nz");
    
    var myLoader:Loader = new Loader(); 
    var url:URLRequest = new URLRequest("http://www.magicstorybox.co.nz/Characters/charYe.swf"); 
    myLoader.load(url);    
    // to get the load progress
    myLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loadProgress);
    
    myLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, loadedHandler);
    stage.addEventListener(Event.ACTIVATE, startPreloader);
}    
catch (e:Error) 
{
    trace(e.message);
}

function startPreloader(event:Event):void
{
    var percentageLoaded:Number = bLoaded/bTotal;
    trace("Preloader started");
        
    mcMask.scaleY = percentageLoaded;    
}

function loadedHandler(event:Event):void
{
    trace("loading complete!");
    
    stop();
    gotoAndPlay(1, "content");
}

function loadProgress(e:ProgressEvent):void
{
    trace("loading. . .!");
    bLoaded = e.bytesLoaded;
    bTotal = e.bytesTotal;
    trace("Loaded = " + bLoaded + "/" + bTotal);
}

I may be looking at this the wrong way, but it’s the first time I’m trying to load an external .swf file into another .swf :3

Any help would be hugely appreciated!
Thanks!
-Nazgul