how to use Serial1 on Artemis nano?

I have tried this on my ATP (do not have a Nano) and can not reproduce it. In the many projects with different Artemis boards (Edge, ATP, Micromod etc) never had this problem. I check the Nano pins for Serial and Serial1 and they are differently assigned. Looks to me like a corrupt board library. Try reinstalling the Artemis 2.2.1 library and see what happens