Preloader with skip button

Question

I have a preloader working fine but having problems integrating a "skip" button (so users can skip opening animation)
Each of the code blocks ("//skip it" and "//Preloader" work ok without each other but when I combine them I get;
"Error #1009: Cannot access a property or method of a null object reference. at xyz.fla::MainTimeline/updatePreloader()"
I think when the skip buttin is pressed the prelodader code continues to be active???
I guess IF skip button is pressed I need to gotoAndPlay (149) and also stop the preloader code but I cannot successfully combine the 2 code blocks
Here is the code.
// skip It
orSkip_btn.addEventListener(MouseEvent.CLICK, skipped);
function skipped (evtObj:MouseEvent):void
    trace ("skipped");
    gotoAndPlay(149);
//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+"% Loaded";
    if (percent==100){
        gotoAndPlay(2);
stop();

Answer 1

try:
// skip It
orSkip_btn.addEventListener(MouseEvent.CLICK, skipped);
function skipped (evtObj:MouseEvent):void
    trace ("skipped");
if(framesLoaded>=149){
loaderInfo.removeEventListener(ProgressEvent.PROGRESS, updatePreloader);
    gotoAndPlay(149);
//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+"% Loaded";
    if (percent==100){
        gotoAndPlay(2);
stop();