Untraceable error in script code

Hi,

When I do a syntax check, everything yields ok.  But, when I try to publish, I get the following error:

>1046: Type was not found or was not a compile-time constant: MotionEvent.<

Here's the code in question:

function clickHD_Btn(e:MotionEvent) {

Any ideas?

Ron

P.S. Here's the entire code:

function setupEvents() {
// associate events with event handlers
HD_Btn.addEventListener(MouseEvent.CLICK, clickHD_Btn);
Machining_Btn.addEventListener(MouseEvent.CLICK, clickMachining_Btn);
}
 
function clickHD_Btn(e:MotionEvent) {
if(stage.displayState=="fullScreen") {
  stage.displayState="normal";
} else {
  stage.displayState="fullScreen";
}
}

function clickMachining_BtnButton(e:MouseEvent) {
gotoAndPlay(1,"Usinage");
}
 
setupEvents();