Display Object problems

1

Hi - I’ve done a bunch of searching and googling on this, but I can’t figure it out. I want to remove the clip on the the stage when the new one is added. mySprite was the holder. It works the first time, but after that … I get the

ArgumentError: Error #2025: The supplied DisplayObject must be a child of the caller.
at flash.display::DisplayObjectContainer/removeChild()
at MethodInfo-1() error –

and I can’t track it down.

 
// these are buttons // 
CanopyAds.addEventListener(MouseEvent.CLICK, CanopyListener); 
GovCircle.addEventListener(MouseEvent.CLICK, GovListener)
        
       
        function CanopyListener(event:MouseEvent):void { 
            
            if(welcomeMC) { 
                removeChild(welcomeMC) } 
            if(mySprite) { 
                removeChild(mySprite); } 
            
            var canopyPI = new PortfolioItem(); 
        
            canopyPI.setText("This is some text.")
            addChild(canopyPI); 
            
            addChild(mySprite);
            mySprite.addChild(canopyPI); 

            
            } 
            
        
        function GovListener(event:MouseEvent):void { 
            
            if(welcomeMC) { 
                removeChild(welcomeMC) } 
            
            if(mySprite) { 
                removeChild(mySprite); } 
            
            var gcPI = new PortfolioItem(); 
            gcPI.setText("This is some different text")
            
            addChild(mySprite);
            mySprite.addChild(gcPI); 

            }

eventually i’ll put this into a function/class so i’m not repeating the code, but right now I’m just trying to get it to work right.

thanks in advance!