Why won't my external swf preloader work?

I have a swf called ladiesrings.swf that is a 6MB size file due to about 140 images that are dynamically loaded into a sliding photo gallery from the library.

Because this is such a large file, I need a preloader. So I've used a tutorial for an external swf preloader, and it's loading the movie, but it's still showing a blank page until the movie is loaded? I'm really confused. Why isn't this working?

First frame actionscript for preloader:

siteLoader.loadMovie("ladiesrings.swf");
loadingBar._xscale = 1;
loadingBar.onEnterFrame = function() {
kBytesLoaded = this._parent.siteLoader.getBytesLoaded() / 1024;
kBytesTotal = this._parent.siteLoader.getBytesTotal() / 1024;
percentage = Math.round(kBytesLoaded / kBytesTotal * 100);
this._xscale = percentage;
if (percentage == 99) {
delete this.onEnterFrame;
}
}

if (percentage == 99) {
this._parent.loadingBarFrame._alpha = 0;
this._alpha = 0;
delete this.onEnterFrame;
}

Finally able to get this working. Ended up using a different external swf preloader tutorial and it was doing the exact same thing. Was working during my test in flash, but then when uploaded, it was showing a blank page. Turned out to be some kind of problem with the way the swf file was embedded, so I opened a brand new page - reinserted it, and it worked great.