Error #1009 - think it has to do with a movie file

Question

This error keeps on coming up when im trying to complete my flash website, the error seams to linked to a movie file that is interrupting something somewhere
this is the complete error message,
TypeError: Error #1009: Cannot access a property or method of a null object reference.
          at wokringonsite_fla::MainTimeline/frame3()[wokringonsite_fla.MainTimeline::frame3:16]
          at flash.display::Sprite/constructChildren()
          at flash.display::Sprite()
          at flash.display::MovieClip()
          at flash.display::MovieClip/nextFrame()
          at wokringonsite_fla::MainTimeline/updatePreloader()[wokringonsite_fla.MainTimeline::frame1: 12]
this is the code from the begining
stop();
//Preloader
loaderInfo.addEventListener(ProgressEvent.PROGRESS, updatePreloader);
function updatePreloader(evtObj:ProgressEvent):void
          //container for the progress of the site (download)
          var percent:Number = Math.floor((evtObj.bytesLoaded*100)/evtObj.bytesTotal);
          preloader_txt.text = percent+"%";
          if (percent==100){
                    nextFrame();
next frame
stop();
//Animate in the home_mc from right to left, using the Tween class.
//Flash - go get code that's going to make the tween work...
import fl.transitions.Tween;
import fl.transitions.TweenEvent;
import fl.transitions.easing.*;
//content_mc animation - animate in..
var homeTween:Tween = new Tween(content_mc,"x",Regular.easeOut,content_mc.x,350,1,true);
//Move the background into place
new Tween(bkgd_mc,"x",Regular.easeOut,bkgd_mc.x,0,1,true);
//handle events for buttons...
home.addEventListener(MouseEvent.CLICK, clickSection);
about.addEventListener(MouseEvent.CLICK, clickSection);
portfolio.addEventListener(MouseEvent.CLICK, clickSection);
contact.addEventListener(MouseEvent.CLICK, clickSection);
AD5.addEventListener(MouseEvent.CLICK, clickSection);
AD6.addEventListener(MouseEvent.CLICK, clickSection);
AD7.addEventListener(MouseEvent.CLICK, clickSection);
tvc.addEventListener(MouseEvent.CLICK, clickSection);
function clickSection(evtObj:MouseEvent){
          //trace shows what's happening.. in the output window
          trace ("The "+evtObj.target.name+" button was clicked!")
          //go to the section clicked on...
          gotoAndStop(evtObj.target.name);
var aboutTween:Tween = new Tween(content_mc,"x",Regular.easeOut,content_mc.x, 0,1,true);
//Move the background into place
new Tween(bkgd_mc,"x",Regular.easeOut,bkgd_mc.x,-166,1,true); ------- this basic code is used for all windows from home to tvc ,
tvc code
var tvcTween:Tween = new Tween(content_mc,"x",Regular.easeOut,content_mc.x,-2500,1,true);
//Move the background into place
new Tween(bkgd_mc,"x",Regular.easeOut,bkgd_mc.x,-1500,1,true);
tvcTween.addEventListener(TweenEvent.MOTION_FINISH,donePlaying);
function donePlaying(e:TweenEvent):void{
          trace ("done playing!");
          content_mc.tvc_mc.myvideo.play();
I have absolutely no idea and right now it seams like a maze trapped in the puzzel trapped in pac man,
any help would be fantastic
cheers

Answer 1

hey man this is a screen shot from frame 3, there is nothing in frame 16 which makes me wonder