Hi guys, I'm trying to get my head around the AnimatorFactory class for the first time and keep hitting errors.

Essentially what I'm trying to do is create a game involving bugs moving around the screen. Simply straight line tweens weren't the kind of movement we wanted, so I hunted around and found the function that allows you to convert a pre-designed motion tween into AS3 code for you to use.

I've created an AnimationManager class to store the details of all the possible Motions, and each new instance of a bug is randomly assigned one of these motion paths when their 'go()' function is called. Here is the function:

public function go():void

        {

            _myMotion = _myAnimationManager.getAnAnimation();

            _myAnimFactory = new AnimatorFactory(_myMotion);

            _myAnim = _myAnimFactory.addTarget(_myBug, 1);

            _myAnim.addEventListener(MotionEvent.MOTION_END, motionFinishHandler);

        }

_myMotion is an instance of the Motion class, _myAnimFactory is an instance of the AnimationFactory class, _myAnim is an instance of the AnimationBase class. _myBug is a simple MovieClip that is a child of the class conatining the go() function. All variables are protected class variables.

The code compiles fine but when it runs I keep getting this error:

ReferenceError: Error #1069: Property instance454 not found on code.game.mobs.SmallFly and there is no default value.

    at fl.motion::AnimatorBase$/processCurrentFrame()

    at fl.motion::AnimatorFactoryBase/addTargetInfo()

    at fl.motion::AnimatorFactoryBase/addTarget

The "instance454" thing seems to refer to the _myBug variable. I don't understand why this should be not found? The SmallFly class is simply a subclass of my generic "Bug" class which contains this go() function.