[RESOLVED] Timer

[Wisconsin]

I have a timer on the main timeline that triggers a function during a quiz that saves variables, scores the question and brings in the next question. At the end of the quiz in test mode I get an error that continually fires at the end of the quiz, but not during the quiz. Here is my timer.

    var count:Number=30;
    var myTimer:Timer=new Timer(1000,count);
    myTimer.addEventListener(TimerEvent.TIMER, countdown);
    myTimer.start();

    function countdown(event:TimerEvent):void {
        question1_mc.myReflect_mc.timer_mc.myTimer_txt.text = String((count)-myTimer.currentCount);
        question1_mc.myReflect_mc.MCreflect.myTimer_txt.text = String((count)-myTimer.currentCount);
        if (question1_mc.myReflect_mc.timer_mc.myTimer_txt.text=="0") {
            question1_mc.myReflect_mc.timer_mc.myTimer_txt.text="";
            question1_mc.myReflect_mc.MCreflect.myTimer_txt.text="";
            feedback_timer(event);
        }
    }

function resetCountDown():void {
    if (myQuestions.length>1) {
        myTimer.reset();
        question1_mc.myReflect_mc.timer_mc.myTimer_txt.text=String(count);
        question1_mc.myReflect_mc.MCreflect.myTimer_txt.text=String(count);
        myTimer.start();
    }
} 

Here is the error message...I stop the timer in the feedback_timer function. The timer seems to work fine and the error doesn't seem to affect anything but I don't know why I'm getting it.

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at TEMPLATEQUIZvocschoolCS4_fla::MainTimeline/countdown()
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()

[5TonsOfFlax]

Which reference is null there?

Try also removing the timer event listener.

Post feedback_timer if that doesn't help.

[Wisconsin]

Which reference is null there?

Try also removing the timer event listener.

Post feedback_timer if that doesn't help.

I removed the listener and that solved the problem. Thanks once again.

I think I know what was happening. I stopped the timer and advanced one frame where there was no timer on stage. Stopping the timer wasn't sufficient, I needed to remove the listener.