First time I’ve got it to work in a while so hopefully it is a permanent fix.
1, went to I/O device and removed the computer off the list of devices.
2, recorder and selected the “Nuendo Live” tab.
3, “Nuendo Live Setup” button
4, “Specified IP Address”
I then went and started Live and the channels came up fine.
I’m guessing you could leave it like this but my computer is setup as DHCP so the address might change.