I received a message on my roon page that update(s) for the device(s) were available . so i selected to update all. The Choose your Roon Core screen came up with and update required with a green dot next to it and also an oblong blue Connect button which I tapped and got a screen showing Time for an upgrade. However next to the Nucleus it said that I have the latest version 2.0 (build 1128) installed with a green checkmark. When I select Go back on that screen it takes me back to the first screen.
I tried to reboot using the power button on the back of the nucleus but that did not help.I also unplugged it and put the plug back. Also I checked all connections. Oddly the light does not seem to be working on the power button of the Nucleus.