Messages

whats the name of the map already downloaded? is now installed on your computer? basecamp/mapsource shows you the map?  somtimes you will need an unlock code tied for your gps id. mapinstall recognize if your gps  could be loaded with maps installed on your computer if you previously unlock them for your gps id or the map is unlocked for all gps.
if the map is locked, you ll not be able to transfer to your gps unit. mapinstall cant find devices to transfer the maps.