Navvies all, greetings from Adelaide to Port Lincoln race, starting later today.  Sitting at the airport, as one does.
For some reason, on my laptop, C-Map dongle plugged in, no detailed charts show in Expedition.  This laptop is a backup, and I think I've used C-Map on it before, but certainly not for some time if I have.  I'm not sure the laptop can see the dongle.  Ideas?