Anyone have an idea as to what could be going wrong?

I have this code:
var menuArea:menuAreaScene = new menuAreaScene();

function clicked(event:Event):void
{
if(event.currentTarget == menuBtn)
{
addChild(menuArea);
menuArea.x = 21;
menuArea.y = 60;
menuArea.alpha = 0;
menuBtn.addEventListener(Event.ENTER_FRAME, fadeIn);
}
}

function fadeIn(event:Event):void
{
menuArea.alpha += .050;
if(menuArea.alpha >= 1)
{
menuArea.removeEventListener(Event.ENTER_FRAME, fadeIn);
}

}
menuBtn.addEventListener(MouseEvent.MOUSE_DOWN, clicked);

basically I have _mc that I call into the project for my main menu.
everything works, but the clip that I am calling in now is not on the right y number. Right now it’s set to 60, but I need it set to 49, but when I set it to 49 my menu stops working. Nothing works, no roll over no buttonMode no nothing. Really strange and I can’t seem to figure it out. Like I said before… where it’s at now at y= 60 it works great… but I move it to y= 49 it stops the menu above it from working. really strange… any one have any ideas? I have been fooling around with this all morning, and no luck!