I am loading one swf into another using the Loader class, but when the child swf finishes loading and is added to the display list, its Document Class is not instantiated. I have a few trace statements should execute when the object is created. When I compile the child SWF on its own, the Document Class runs as expected.

So I'm wondering... how do I associate a child SWF's Document Class with Loader.content?

// code in parent SWF's Document Class (Preloader)
public function Preloader(){            
    swfLoader = new Loader();
    swfLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, loaderDone);
    swfLoader.load(new URLRequest("mainmovie.swf"));
}

private function loaderDone(e:Event):void {
    // Add Loader.content to new Sprite
    mainMovie = Sprite(e.target.content);
    mainMovie.alpha = 0;

    swfLoader = null;
    addChildAt(mainMovie, 0);

    mainMovie.addEventListener(Event.ADDED_TO_STAGE, mainMovieAddedListener);
}

// functions in MainMovie.as not ever running, 
// even though it is listed as the child SWF's Document Class

Cheers!