A Tween replacement to avoid getting GC-ed during playing a tween.

SafeTween.as

package {
import fl.transitions.Tween;
import flash.utils.*;

public class SafeTween {
    var tw : Tween;

    public function SafeTween (obj:Object, prop:String, func:Function,
                               begin:Number, finish:Number,
                               duration:Number, useSeconds:Boolean = false) {
        tw = new Tween (obj, prop, func, begin, finish, duration, useSeconds);
        var intid = setInterval (function () {
                if (! tw.isPlaying) {
                    clearInterval (intid);
                }
            }, 100);
    }
}
}