Loading issues with AS3 - actionscript-3

Question

I am trying to load 3 swf files into a parent swf one at a time. However, two of them load the third gives a problem. The other two use my custom preloader but the third one fails to recognize it and shows the default flash loader (with 5 dots). But the loading bar loads up properly. And if I trace this.parent inside my third SWF, it shows up null.
Not sure if I am missing something obvious here but the code for all of them are the same.
package
{
import flash.display.Loader;
import flash.net.URLRequest;
import flash.display.MovieClip;
import flash.events.ProgressEvent;
import flash.events.IOErrorEvent;
import flash.events.Event;
import flash.system.Security;
public class PreloaderMain extends MovieClip
{
private var l:Loader = new Loader();
public function PreloaderMain()
{
LoadGame3(); //THIS DOES NOT LOAD UP
}
private function LoaderIOErrorHandler(i:IOErrorEvent):void
{
trace("IOErrorHandler: " + i.toString());
}
private function loop(e:ProgressEvent):void
{
var perc:Number = e.bytesLoaded / e.bytesTotal;
mLoadingScreen.percent.text = (Math.ceil(perc * 100) + "%").toString();
}
private function done(e:Event):void
{
addChild(l);
}
private function LoadGame1():void // THIS LOADS FINE
{
l.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, LoaderIOErrorHandler);
l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loop);
l.contentLoaderInfo.addEventListener(Event.COMPLETE, done);
l.load(new URLRequest("SWF1.swf"));
l.x = 20;
l.y = 100;
}
private function LoadGame2():void //THIS LOADS FINE
{
l.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, LoaderIOErrorHandler);
l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loop);
l.contentLoaderInfo.addEventListener(Event.COMPLETE, done);
l.load(new URLRequest("SWF2.swf"));
l.x = 20;
l.y = 100;
}
private function LoadGame3():void //THIS GIVES A PROBLEM!!
{
l.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, LoaderIOErrorHandler);
l.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, loop);
l.contentLoaderInfo.addEventListener(Event.COMPLETE, done);
l.load(new URLRequest("SWF3.swf"));
l.x = 20;
l.y = 100;
}
}
}