Hi,
Thank you this app. It's working well for me too, excepting one thing: when I try to download other maps (it looks like by default I have 4 small countries) the application blocks and it tell me "Unfortunately, Navigon has stopped", wherever which map I try to download. I tried also an older version, same thing. Is this happening also for you?
I'm using Sony Xperia S with Android 4.1.2.