ActionScript 3.0 :: How To Start Animation After Tween Is Done

Trying to start an animation after a tween is done. Animation starts but way later, like 5 seconds after tween is finished.
Code:
var easeInPic:Tween = new Tween(bg, "alpha", Regular.easeIn, 0, 100, 1000, false );
easeInPic.stop();
function showPic(e:Event):void{
tweenPicEI();
}function tweenPicEI ():void{
easeInPic.addEventListener(TweenEvent.MOTION_FINISH, showMenuBar);
easeInPic.start();
}function showMenuBar(e:TweenEvent):void{
menuBar.gotoAndPlay(1);
}