[CS3] TypeError: Error #1009: Cannot access a property or method of a null object ref

[lindsaybet]

Yes, I realize this probably a common error, I am a student and have no clue on how to solve this. i am doing (what I think to be) simple navigation buttons and this error keeps popping up everytime I try to ctrl+enter the movie...

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at applepic2_fla::MainTimeline/frame1()

Here is my actionscript 3.0

stop();
applebtn.addEventListener(MouseEvent.CLICK, onAppleClick, false, 0, true);
mcbtn.addEventListener(MouseEvent.CLICK, onMCClick, false, 0, true);
rugbybtn.addEventListener(MouseEvent.CLICK, onRugbyClick, false, 0, true);
aopibtn.addEventListener(MouseEvent.CLICK, onAopiClick, false, 0, true);
psebtn.addEventListener(MouseEvent.CLICK, onPSEClick, false, 0, true);
rugbymain.addEventListener(MouseEvent.CLICK, onRugbymainClick, false, 0, true);
applemain.addEventListener(MouseEvent.CLICK, onApplemainClick, false, 0, true);
aopimain.addEventListener(MouseEvent.CLICK, onAopimainClick, false, 0, true);
psemain.addEventListener(MouseEvent.CLICK, onPSEmainClick, false, 0, true);
mcbtn.addEventListener(MouseEvent.CLICK, onMCmainClick, false, 0, true);

function onAppleClick(evt:MouseEvent):void {
gotoAndPlay(2);
}
function onRugbyClick(evt:MouseEvent):void {
gotoAndPlay(51);
}
function onAopiClick(evt:MouseEvent):void {
gotoAndPlay(98);
}
function onPSEClick(evt:MouseEvent):void {
gotoAndPlay(143);
}
function onMCClick(evt:MouseEvent):void {
gotoAndPlay(190);
}
function onRugbymainClick(evt:MouseEvent):void {
gotoAndPlay(73);
}
function onApplemainClick(evt:MouseEvent):void {
gotoAndPlay(26);
}
function onAopimainClick(evt:MouseEvent):void {
gotoAndPlay(198);
}
function onPSEmainClick(evt:MouseEvent):void {
gotoAndPlay(173);
}
function onMCmainClick(evt:MouseEvent):void {
gotoAndPlay(213);
}


Any help you could give me would be very much appreciated (oh an put it in as simpliest form you can, I'm a newbie at this actionscript)

[deepakflash]

This should be in Actionscript 3.0 forum