How do I upload on the new version?

I got the new version too and every time I try to sync my device to Garmin Express, there's a server error. Any help is appreciated.

Might help to provide some detail if you want to get a useful answer:

my Garmin

and

my device

mean exactly what? There are currently ten different Garmin running watches and eight different Garmin cycling computers available, as well as devices for swimming, golfing, etc.