HELP! My preloader doesn't work

Greetings. I’m having trouble getting a pre-loader to work. I have an external .swf file that I’m trying to load into an empty movie clip. This is my first time using MovieClipLoader and while onLoadStart and onLoadComplete seem to work onLoadProgress is skipped right over. My code is below and it will probably look familiar since I got it from this site. The traces come up in the output window indicating the start and the complete but all the things that should happen in the progress portion seem to get skipped right over.
many thanks in advance to anyone who can check into this for me. I’m about to go nuts!

[FONT=Courier New]bar._visible = false;
border._visible = false;
var empty = this.createEmptyMovieClip(“container”, “50”);
empty._x = 35;
empty._y = 70;[/FONT]
[FONT=Courier New]my_mc = new MovieClipLoader();
preload = new Object();
my_mc.addListener(preload);[/FONT]
[FONT=Courier New][/FONT]
[FONT=Courier New]preload.onLoadStart = function(targetMC) {
trace("started loading "+targetMC);
container._visible = false;
bar._visible = true;
border._visible = true;
pText._visible = true;
} [/FONT]

[FONT=Courier New]preload.onLoadProgress = function(targetMC, lBytes, tBytes) {
bar._width = (lBytes/tBytes)*100;
pText.text = "% "+Math.round((lBytes/tBytes)*100);
} [/FONT]

[FONT=Courier New]preload.onLoadComplete = function(targetMC) {
container._visible = true;
border._visible = false;
bar._visible = true;
pText._visible = true;
trace(targetMC+" finished");
}[/FONT]
[FONT=Courier New][/FONT]
[FONT=Courier New]btnOne.onPress = function (){
my_mc.loadClip(“bk1_mov.swf”, “container”);
lineDraw.gotoAndPlay(1);
one_mc._visible = true;
}[/FONT]