flex SDK3.6 下载出现问题

老程序在Flex SDK3.2下 运行下载正常

SDK3.6下愣是不下载，晕！正在找原因

备注下

 

//导出excel或txt

public static function export(url:String,table:String):void{

var file:FileReference=new FileReference();

try

{

configureListeners(file);

var req:URLRequest=new URLRequest(url);

req.method=URLRequestMethod.POST;

file.download(req,table);//此处，SDK3.6貌似不执行

}

catch (e:Error)

{

AlertUtil.show(e.message,"",null,3);

}

}