Alright, I have been spending the whole day on this problem and am still stuck.

My current situation is when I want to play from my Scene 7 to Scene 0 frame 1, I use the following code

home.addEventListener(MouseEvent.MOUSE_DOWN, homeHandler);
function homeHandler(evt:MouseEvent):void{
gotoAndStop(1, "Scene 0");
}

The in the output panel the following error would appear,

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at Stroboscope_V1_fla::MainTimeline/frame1()
at flash.display::MovieClip/gotoAndStop()
at Stroboscope_V1_fla::MainTimeline/homeHandler()

This error code is like my nemesis, I keep getting it =.=

I seriously am at my wits end, please advice/help ):