Errors 2108 and 2007

Hello, I am trying to make a drag and drop game in which 3 objects will drag and drop to the same target. One of them is the right one so when the two of them drop into the target it will go to another ''Try again' scene. If the right one is dropped into the target it will go to the 'Well Done' scene. Furthemore i ran into some errors. So far i have created the code for one item. Everyting is fine until the next scene appears and the object (table) remains in the scene, i can even move it around.

The errors are th following:

ArgumentError: Error #2108: Scene was not found.
at flash.display::MovieClip/gotoAndPlay()
at Untitled_fla::MainTimeline/frame328()
at flash.display::MovieClip/gotoAndPlay()
at Untitled_fla::MainTimeline/dropIt()

TypeError: Error #2007: Parameter hitTestObject must be non-null.
at flash.display::DisplayObject/_hitTest()
at flash.display::DisplayObject/hitTestObject()
at Untitled_fla::MainTimeline/dropIt()

p.s.: The first TypeError appears when the 'Try again' scene is shown up.

The second TypeError appears when i move the object arround at the 'Try again; scene.

Also i dont think any 'scene' exists in my code as it appears on the first TypeError.

The code is the following:

{
trap.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
trap.addEventListener(MouseEvent.MOUSE_UP, dropIt);
trap.startX = trap.x;
trap.startY = trap.y;
}

function pickUp(event:MouseEvent):void
{

event.target.startDrag(true);
event.target.parent.addChild(event.target);

}
function dropIt(event:MouseEvent):void
{

event.target.stopDrag();
if(event.target.hitTestObject(target1)){
MovieClip(root).gotoAndPlay(1,"xana1");

}
else
{

event.target.x = event.target.startX;
event.target.y = event.target.startY;
event.target.buttonMode = true;

}
}

Also I attach a picture of the error

Thank you so much in advance!