Professional :: No Looping Once Preloader Was Added?

So I have a looping SWF file that I uploaded on my website. It played perfectly until I decided to add a preloader.
 
I set up the Flash file with 2 Scenes, "Preloader" and "Scene 1" .The Preloader scene will play just fine. After the preloader plays, Scene 1 then begins to play as it should. However, once the animation ends, instead of looping like it did before, it just stops on the first frame.

How can I get my SWF to play the Preloader, and then continue looping the main animation (Scene 1)?
 
Here is my AS:
 
import flash.events.ProgressEvent;
function update(e:ProgressEvent):void
{
var percent:Number = Math.floor( (e.bytesLoaded*100)/e.bytesTotal );

[Code].....