This is an unfortunate but uncritical error that is shown at startup. I retested this now and I must have failed to include a default port number for the aprs socket, even for a fresh install. Its very easy to remove this, just open preferences and enter a port number on the bottom half of the devices tab (press ok to save). I will fix this now, we are due at church in an hour so hope I can commit right away. Rein: do you want to create a new installer where this is fixed? 73 de Per, sm0rwo