Hello I have a Nuvi 1440 (serial: 1T9132414) and have bought and downloaded a City Navigator North America - Lower 49 States map. Apparently it needs activating. Using Garmin Express on my Mac and attempting to activate it, I repeatedly get this error: "We are unable to activate your purchase at this time. The server encountered a temporary error and we could not complete your request. Try again later." One time I was asked to log in, and did so, but the same error message occurred. What us the problem please? It is 4.20pm GMT on Friday Dec 1 and I need to use the map on December 3 after flying to the USA. Please help.