Roon CD ripping stopping

Hi Dylan.
Roon can play now, and I can see my music on Nucleus plus in Roon. I managed to rip a few CDs to FLAC from an external USB Bluray drive but after a couple of successful rips, it now fails. I have tried many CDs. The firmware on the Nucleus still says Firmware 1.0 (Build 227) stable.
Is there a way to force a maintenance routine or OS re-install on the Nucleus? It seems to be erratic.

Hi @Jo_David, what kind of drive are you using? After a reboot does it work okay?