MC Disappearing

[SIZE=2]have a simple MC that moves and fades in using the script below but for some reason the movie clip will disappear and replay even though I have a stop function attached.[/SIZE]

[SIZE=2]It will disappear after about a minute or two. I have the movie loop set to false but cant figure out why its “replaying”. Any help is appreciated.[/SIZE] :puzzled:

Here is the actionscript i have attached to the mc.

[SIZE=2][/SIZE]

[SIZE=2]onClipEvent (load) {
_x = 563.0;
_y = 140.0;
speed = 4;
_alpha = 0;
fadespeed = 3;

}[/SIZE]

[SIZE=2]onClipEvent (enterFrame) {
_alpha += fadespeed;
endX = 172.0;
endY = 140.0;
_x += (endX-_x)/speed;
_y += (endY-_y)/speed;
stop();
}[/SIZE]

[SIZE=2][/SIZE]