Google translate and error code

Hi there! I’m pretty new to AS3 and have a problem.
I’m trying to build a WOTD (where the WOTD gets translated into German) widget and an extra add-on that is a input text translator. The WOTD part works fine but my translator isn’t. I’m using a google translation api btw.
At the moment when clicking on my translate button I get Error Code #1009:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at be.boulevart.google.ajaxapi.translation::GoogleTranslation/onResponse()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/onComplete()

here’s my code and I’d really appreciate any help!

package{
	import flash.display.*;
	import flash.events.*;
	import gs.*;
	import fl.motion.easing.*;
	import framework.utils.LoadXML;
	import be.boulevart.google.ajaxapi.translation.*;
	import be.boulevart.google.ajaxapi.*;
	import be.boulevart.google.ajaxapi.search.*	
	import be.boulevart.google.apicore.GoogleApiKeyStore;
	import be.boulevart.google.events.*;

	
	public dynamic class wotd_widget extends MovieClip{
		//vars
		var loadXML:LoadXML = new LoadXML('http://wordsmith.org/awad/rss1.xml',onComplete);
		private var mc01:MovieClip;
		private var mclayout:MovieClip;
		
		//constructor
		public function wotd_widget():void{
			trace('wotd');
			init();
			init_btn();
		}
		
		
		
		
		  private function onComplete($xml:XML):void{
			//trace($xml);
			trace($xml.channel.item[0].title);
			trace($xml.channel.item[0].description);
			wotd_In.text = $xml.channel.item[0].title;
			des_In.text = $xml.channel.item[0].description;
			var gt:GoogleTranslation = new GoogleTranslation();
			gt.translate($xml.channel.item[0].title,'en','de');
			gt.addEventListener(GoogleApiEvent.TRANSLATION_RESULT,onTranslate);
			
			
		}
		
		 	private function onTranslate(e:GoogleApiEvent):void{
			
			//trace(e.data.to);
			//trace(e.data.orig);
			//trace(e.data.from);
			//trace(e.data.result);
			trans_In.text = e.data.result;
		}
		
		
			private function init_btn():void{
			this.mc01 = new trans_btn();
			this.mc01.x = 340.9;
			this.mc01.y = 234.4;
			addChild(this.mc01);
			TweenMax.to(this.mc01,1,{x:340.9, y:234.4, ease:Cubic.easeOut,onComplete:onComplete1});
			}
			
			private function onComplete1():void{
			this.mc01.buttonMode = true;
			this.mc01.addEventListener(MouseEvent.ROLL_OVER,mEvent01);
			this.mc01.addEventListener(MouseEvent.ROLL_OUT,mEvent01);
			this.mc01.addEventListener(MouseEvent.CLICK,mEvent01);
		}
		
		function mEvent01(e:MouseEvent):void{
			switch(e.type){
				case 'rollOver':
				//this executes when you rollover the target
				TweenMax.to(MovieClip(e.target),0,{tint:0xFF75B6});
				break;
				
				case 'rollOut':
				//this executes when you rolloff the target
				TweenMax.to(MovieClip(e.target),0,{removeTint:true});
				break;
				
				case 'click':
				//this executes when you click the target
				onClick01();
				break;
			}
			
			function onClick01():void{
				
				var gt2:GoogleTranslation = new GoogleTranslation();
				gt2.translate(input_trans.text,'en','de');
				gt2.addEventListener(GoogleApiEvent.TRANSLATION_RESULT,onTranslate2);
			}
			
		 function onTranslate2(e:GoogleApiEvent):void{
			
			trace(e.data.to);
			trace(e.data.orig);
			trace(e.data.from);
			trace(e.data.result);
			output_trans.text = e.data.result;
		}
		
		
	}