Yes, I alway use application loader.
I post a better image. On the left you see the list of crashes of a particular release version and when you select one, you see in the right details about date, time, device model and IOS version. In the middle the stack trace. Here I can suppose the error was in aggiorna_lbladdress, but where exactely ? ....
If you develop with Xcode you can open the error in the source code editor and see exactely (I suppose) where it is, but here with B4I how can we do ?