There was an error checking for an update of my Roon Server and how to deal with？

Support Nucleus Support
2

Have you tried going to the Nucleus+ web admin page and then using the ‘reinstall’ button to update the Nucleus? The Web admin page is found at:

http://nucleusplus/

If this does not work, you can also try: http://192.168.1.24/ (using the ip address shown in screenshot above).

Having said that, you are already runing the latest production version. See: