loadMovie problem

1

hi again,
firstly here is my whole code:

import mx.transitions.Tween;
import mx.transitions.ease.*;
var intro = b.attachMovie("concept", "jı", 1);
var iafx:Tween = new Tween(intro, "_alpha", Strong.easeOut, 0, 100, 0.4, true);
var loaderListener:Object=new Object();
var mcl:MovieClip=new MovieClip();
function back() {
 var intro = b.attachMovie("concept", "jı", 1);
 var iafx:Tween = new Tween(intro, "_alpha", Strong.easeOut, 0, 100, 0.4, true);
}
xpos = 0;
ypos = 0;
for (j=0; j<20; j++) {
 
 var links = thumbs.attachMovie("ct"+String(j), "pth"+String(j), j);
 links._x = xpos;
 links._y = ypos;
 links._alpha = 50;
 this.links.j = j;
 if (i%1 == 0) {
  xpos += 35;
  ypos = 0;
 } else {
  ypos += 60;
 }
 links.onRollOver = function() {
  var scalex:Tween = new Tween(this, "_alpha", Strong.easeOut, this._alpha, 100, 0.4, true);
  var backeffect = b.attachMovie("cback"+String(this.j), "lolo", 1);
  var bafx:Tween = new Tween(backeffect, "_alpha", Strong.easeOut, 0, 100, 0.4, true);
 
 
 };
 links.onRollOut = function() {
  var scalex:Tween = new Tween(this, "_alpha", Strong.easeOut, this._alpha, 70, 0.4, true);
  back();
 };
 
 
 links.onRelease = function() {
  var alphx:Tween = new Tween(this, "_alpha", Strong.easeOut, this._alpha, 100, 0.4, true);
  mcl.loadMovie("con1.swf",_root.movie);
 
 };
}
 
loaderListener.onLoad=function(){
 txtLoaded._visible=true;
 bar._visible=true;
}
loaderListener.onLoadProgress=function(target:MovieClip,bytesLoaded:Number,bytesTotal:Number){
 txtLoaded.text=String(Math.floor(bytesLoaded/bytesTotal*100))+"%loaded"
bar._xscale=bytesLoaded/bytesTotal*100;
}
loaderListener.onLoadComplete=function(){
 bar._visible=false;
 txtLoaded._visible=false;
}
mcl.addListener(loadListener);

there’s a problem about loading movie. when i export my movie and try my buttons i see this output message > Target not found: Target=“undefined” Base="_level0"

i know its because of the loader but i couldnt fix it…