This is an unfortunate but uncritical warning 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 put a fix for this is in subversion now. I tested it with a fresh XP install running under virtualbox, had no warning on startup. Rein: this is non critical but annoying, should we perhaps recreate the installer to avoid this? 73 de Per, sm0rwo