stage Issue (error 1009)

[S7evin]

Hey guys,

Im new to flash and Im really going crazy by now. I watched some TUT (http://www.developphp.com/Flash_tuto...r_1.0_Tutorial) and tried to remake it in a new AS3 File. That worked out fine. My problem now is that I get an error once I want to put it into an existing flash page. I know there are plenty of posts and I have read for the past 6 hours threads about this error but didnt find anything what really helped me. As I mentioned in the beginning Im pretty new to flash so it might be missing knowledge...Anyway I would really appreciate if anyone of you could help me!

Error message: TypeError: Error #1009: Cannot access a property or method of a null object reference.
at kkcb6_fla::scrollMC_17/scrollMyContent()[kkcb6_fla.scrollMC_17::frame1:7]
at kkcb6_fla::scrollMC_17/frame1()[kkcb6_fla.scrollMC_17::frame1:36]

Code:

// Scroll My Content function - AS3
function scrollMyContent () {
    // Cache the TextField as a bitmap to improve performance.
    content_mc.cacheAsBitmap = true;
    // Event Listeners
    scrollDragger.addEventListener(MouseEvent.MOUSE_DOWN, scrollDraggerPress);
    stage.addEventListener(MouseEvent.MOUSE_UP,mouseUpOnStage);
    // Set variables
    var scrollbarHeight:Number = scrollbarBG.height;
    var contentHeight:Number = content_mc.height;
    var scrollDraggerHeight:Number = scrollDragger.height;
    var maskHeight:Number = contentMask.height;
    var scrollAmout:Number = (contentHeight-maskHeight)/(scrollbarHeight-scrollDraggerHeight);
    var topBound:Number = scrollbarBG.y;
    var bottomBound:Number = scrollbarBG.height-scrollDraggerHeight+scrollbarBG.y;    
    var startPos:Number = content_mc.y;
    var leftBound:Number = scrollbarBG.x;
    var absNumSet:Number = 0;
    
    // When scrollDragger gets pressed we do this
    function scrollDraggerPress(event:MouseEvent):void { 
        // Set bounds using some of the scroller BG properties claimed above
        var bounds:Rectangle = new Rectangle(leftBound, topBound, 0, bottomBound);
        scrollDragger.startDrag(false, bounds);
        stage.addEventListener(MouseEvent.MOUSE_MOVE, reportStageMouse);
        function reportStageMouse(event:MouseEvent):void {
            absNumSet = Math.abs(scrollbarBG.y - scrollDragger.y);
            content_mc.y = Math.round(absNumSet * - 1 * scrollAmout + startPos);
        }
    }
    // When mouse is released while dragging we do this
    function mouseUpOnStage(event:MouseEvent):void { 
        stopDrag();
    }
}
scrollMyContent () 

The Debugging Function tells me that its line 7 and 36 so the following:

stage.addEventListener(MouseEvent.MOUSE_UP,mouseUp OnStage);

and

scrollMyContent ()

Thanks in Advance!

[calmchess]

well this is a nutso listener you are saying when the stage is clicked and the mouse is released then execute a function called...mouseUp OnStage......i don't believe spaces are allowed in a function name to make it worse i don't even see a function named mouseUp OnStage or any function name close to it. is it in a movieclip? I use oop so i'm not real familar with timeline code but maybe the firs example will work.

stage.addEventListener(MouseEvent.MOUSE_UP,mouseUp.OnStage); 

bad----stage.addEventListener(MouseEvent.MOUSE_UP,mouseUp OnStage);
good---stage.addEventListener(MouseEvent.MOUSE_UP,mouseUpOnStage,false,0,true);