Ok I finally have the Nucleus One and ROCK working on my network. The problem was the nested NAT subnet I had created with my Deco x60 router to protect my devices. This had been working fine for years but I guess the Roon Server did not like the double NAT (although the Windows Roon Server) did not have any problems. I moved all devices to a single subnet and the server was able to update.
I was able to upgrade to the latest version of the Server (2.71 build 1680) and audio enabling on each device worked fine.
One problem: When I go to the Nucleus One (now ROCK) web interface, it shows the Roon Server as Not Running. The Roon app on my MAC and iPad are running fine and shows that the app is connected to the Server. When I try to restart the Server from the web interface, it comes up with the same message as before that the server cannot be started and to reboot or contact support.
Let me know if this is something I should worry about or if it is just a bug.