Error 2007

[Sofia5FCD]

Hello, I am creating a game in action script 3.0

My code is the the following:

stop( );

{
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(this.root).gotoAndPlay(1,"xana1");
if (MovieClip(this.root)) gotoAndPlay(1,"xana1") ;{
removeChild(trap); }

}
else
{

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

}
}

{

psar.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);
psar.addEventListener(MouseEvent.MOUSE_UP, dropIt);
psar.startX = psar.x;
psar.startY = psar.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(this.root).gotoAndPlay(1, "bravo1");
if (MovieClip(this.root))gotoAndPlay(1, "bravo1") ;{
removeChild(psar); }

}
else
{

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

}
}

The errors i get are the following: 

TypeError: Error #2007: Parameter child must be non-null.
at flash.display::DisplayObjectContainer/removeChild()
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()

I dont know how to fix them.

Also on the code that has the psar i want it to go to scene bravo1, but it gets to the scene assigned to the previous inastance (trap), which is xana1.

Im desperate i really dont know how to fix it.

Thank you!!!

[kglad · Accepted solution]

you need to fix

if (MovieClip(this.root)) gotoAndPlay(1,"xana1") ;{
removeChild(trap); }

it's not clear what you're trying to do so it's not clear how to fix that, but you could eliminate that error message by using

if(trap.stage){

trap.parent.removeChild(trap);

}

instead of

removeChild(trap);

[Sofia5FCD]

Thank you for your answer!

I did it and it removed the error but now it gives me more errors

TypeError: Error #1009: Cannot access a property or method of a null object reference.
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()

I attach a photo below so you can understand what game it is.

When i drop the table to target everything works fine

but when i drop the fish to the target iit gives me these errors and it isnt going to the scence i assigned it to. It goes to the same scene I have assigned the table to go.

What should i do?

Thank you very much!

[Sofia5FCD]

More specifically the 1009 error is 

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at Untitled_fla::MainTimeline/dropIt()[Untitled_fla.MainTimeline::frame241:24]

[Sofia5FCD]

I fixed the other errors as well! Thank you again so much for your help!

[kglad]

you're welcome.

[Sofia5FCD]

I just tested again to see if the code works on other scenes too and it returns these exact errors i mentioned above and the other scenes dont work :(. Sorry for bothering you again. I tried to remove the fish and the marker objects when for exaple the table hits the target but this doesnt work.

[Sofia5FCD]

I managed to fix these errors by putting the code in the right place but the other scenes won't run the code and they don't come up with any error. 

[Sofia5FCD]

Fixed that as well. Just needed to relocated the dots to the centre of the symbols! 

[kglad]

sounds good. it's always rewarding to fix problems.