Preload image within Class

Hello

This is my first post here and I already have a problem.

I have a class called Gallery and within this class I want to generate thumbnails.
I want to load the thumbnails with only one line of code to make it easy:

this._mclContent.loadClip("mypicture.jpeg", "this.thumbs.myMC"); 

var _mclContent:MovieClipLoader;
var _oListener:Object;

function Gallery() {
	  this._mclContent = new MovieClipLoader(); 
	  this._oListener = new Object();
	     this._oListener.onLoadStart = function(target_mc){
                trace(target_mc+"loading has started!");
        };
        
        this._oListener.onLoadProgress = function(target_mc, loadedBytes, totalBytes) {
        };
        
        this._oListener.onLoadInit = function(target_mc){
                trace(target_mc+" has finished loading");
        };
        
       this._oListener.onLoadComplete = function(target_mc){
				
        };
        
        this._oListener.onLoadError = function(target_mc, errorCode){
                trace(target_mc+" did not properly load: "+errorCode);
        };
        
        this._mclContent.addListener(this._oListener);
        this.createThumbnailObjects();
}

function createThumbnailObjects(){
       trace("start");
       this._mclContent.loadClip("mypicture.jpeg", "this.thumbs.myMC"); 
}

The problem is, that the code only traces “start” and not loads the clip. :hr: