XMLSA class

Hi where am i going wrong?

/**
* ...
* @author $(DefaultUser)
*/
import com.skivecreative.xml.XMLSA;
import mx.utils.Delegate;

class script.Billboard
{
    private var lRoot:MovieClip;
    private var xmlToLoad:XML;
    public var success:Boolean;

    
    public function Billboard(_lRoot:MovieClip)
    {
        this.lRoot = _lRoot;
    }
    private function loadXML():Void
    {
        xmlToLoad = new XML();
        xmlToLoad.ignoreWhite = true;
        xmlToLoad.onLoad = Delegate.create(this, xmlLoaded);
        xmlToLoad.load("events.xml");
    }
    
    private function xmlLoaded (success:Boolean):Void
    {
        if (success)
        {
            var xmlTree:XMLSA = new XMLSA(xmlToLoad);
            for (var i:Number = 0; i < xmlTree.Event.length; i++)
            {
                trace(i);
            }
        }
        else
        {
            trace("error");
        }
    }
    
}