Error #1009 in as3 code to install an Air application from an embedded swf.

Hi, I am getting error #1009 in my code when i try to install the application. I am new to action script and below is the code for my installer.

var airSWF:Object; // This is the reference to the main class of air.swf

var airSWFLoader:Loader = new Loader(); // Used to load the SWF

var loaderContext:LoaderContext = new LoaderContext(); 

                                // Used to set the application domain 

var paramObjAppid:Object = LoaderInfo(this.root.loaderInfo).parameters.appid;

//var paramObj:Object = LoaderInfo(this.root.loaderInfo).parameters;

loaderContext.applicationDomain = ApplicationDomain.currentDomain;

airSWFLoader.contentLoaderInfo.addEventListener(Event.INIT, onInit);

airSWFLoader.load(new URLRequest("http://airdownload.adobe.com/air/browserapi/air.swf"), 

                    loaderContext);

function onInit(e:Event):void 

{

    airSWF = e.target.content;

}

var url = '';

var qty = '';

var appID = '';

var pubID = "";

var runtimeVersion = "3";

var tf:TextField = new TextField();       // create a TextField names tf for debugging

tf.autoSize = TextFieldAutoSize.LEFT;

//tf.size = 4;

tf.wordWrap = true;

tf.border = true;

addChild(tf);        

try

{

    var keyStr:String;

    var valueStr:String;

    var paramObj:Object = LoaderInfo(this.root.loaderInfo).parameters;   //set the paramObj variable to the parameters property of the LoaderInfo object

    for (keyStr in paramObj)

    {

        valueStr = String(paramObj[keyStr]);

        if ( keyStr == 'qty' ) {

            qty = Number(valueStr);

        }

        if ( keyStr == 'url' ) {

            url = escape(valueStr);

        }

        if ( keyStr == 'appid') {

            appID = valueStr;

        }

    }

}

catch (error:Error)

{

}

var arguments:Array = [qty];

launchBtn.addEventListener(MouseEvent.CLICK, fl_MouseClickHandler_2);

function fl_MouseClickHandler_2(event:MouseEvent):void

{

    airSWF.getApplicationVersion(appID, pubID, versionDetectCallback);    

}

function versionDetectCallback(version:String):void

{

    if (version == null)

    {

        trace("Not installed.");

        tf.appendText('Not Installed');

        try {

               airSWF.installApplication(url, runtimeVersion, arguments);

            }

            catch (error:Error){

                tf.appendText(error.toString());

            }

    }

    else

    {

        trace("Version", version, "installed.");

        tf.appendText("appID="+appID);

        try {

            airSWF.launchApplication(appID, pubID );

        }

        catch(error:Error) {

            tf.appendText(error.toString());

        }

    }

}