Hello, I just received the "crash report" from our customer! Well, you know what, the app actually did not crash at all, it just showed the cyrillic characters that are known from the qt bug which has been solved in 5.5. Sorry to have bothered you with that nonsense, and thanks for your input and your time! best wishes Manfred

@lyesqiz 没错，iOS9出来了，还要等好一会儿。