#1009: Cannot access... Sprite/Child...?

1

[SIZE=4]Hello

I have button is scroolbar. I can link it with:
[/SIZE]
scrooll_mc.content_mc.five.addEventListener(MouseEvent.CLICK, clickFive);

function clickFive(evtObj:MouseEvent){
trace(“uz triju bt”)
gotoAndStop(“antras”);
}

[SIZE=4]But the problem comes when I go to link of that button and come back it doesnt work.
[/SIZE]
[SIZE=4]Flash gives an error:[/SIZE]

#1009: Cannot access a property or method of a null object reference.
at bandymai_fla::MainTimeline/frame1()
at flash.display::Sprite/constructChildren()
at flash.display::Sprite()
at flash.display::MovieClip()
at flash.display::Sprite/constructChildren()
at flash.display::Sprite()
at flash.display::MovieClip()
at bandymai_fla::scrollMkkkC_1()
at flash.display::MovieClip/gotoAndStop()
at bandymai_fla::MainTimeline/clickSection()

[SIZE=4]Im a little lost now, maybe anybody can help with that???[/SIZE]