Flex air Updater problem

Question

Hi I have got a problem in my application while using Flex Air updater. Note that i use Air 2.0.2 on windows 7. Sometimes while updating the process blocks and the update stop. I have to kill my application process to allowed updating process run correctely. I use this methode for updating my application:

import flash.fileSystem.File;
import flash.desktop.Updater; 
var updater:Updater = new Updater(); 
var airFile:File = File.applicationStore.resolvePath("app_V1.1.air"); 
var version:String = "1.1"; 
updater.update(airFile, version);`

Is there somebody got the same problem or can help me? Thanks