上傳swf文件到stencyl問題？

好吧，我使用stencyl引擎來製作Flash遊戲，並且我想上傳一個Swf文件。問題是我不斷收到一個錯誤上傳swf文件到stencyl問題？

TypeError: Error #1009: Cannot access a property or method of a null object reference. at _247gamesonline_fla::bn0_Symbol1_2/frame1()

現在我去把有錯誤，並試圖看看什麼是錯的FLA文件的一部分，但不能弄明白。下面是代碼：

stop(); 

var doMain:String = this.stage.loaderInfo.url; 
     var doMainArray:Array = doMain.split("/"); 
     var domainname = doMainArray[2]; 
     var gamename = "nameofgame"; 

     var linktodjp = "http://www.247gamesonline.com/?  p=cat&order=2&tag=puzzle&utm_medium=partnergame&utm_campaign=" + gamename + "&utm_source=" + domainname + "&utm_content=partnergame"; 
var linktodjpfb = "http://www.facebook.com/connect/uiserver.php?app_id=201345053230176&next=http://www.3j.com/processfacebook.php%3Futm_source%3D" + domainname + "%26fgamet%3D76&display=page&cancel_url=http%3A%2F%2Fwww.3j.com%3F3Futm_source%3D" + domainname + "&locale=en_US&return_session=1&session_version=3&fbconnect=1&canvas=0&legacy_return=1&method=permissions.request&perms=publish_stream,offline_access,email,user_birthday,user_interests,read_friendlists"; 


buttonplay.addEventListener(MouseEvent.CLICK, playlogonow); 
logo.addEventListener(MouseEvent.CLICK, gotowebsite); 
logo.buttonMode = true; 

stop(); 
function playlogonow(e:Event) { 
logo.play(); 
gotoAndStop(2); 
return; 
} 

function gotowebsite(e:Event) { 
navigateToURL(new URLRequest(linktodjp)); 
return; 
}

另外在代碼的另一部分它只是說