There was no Roon (Core) Software update today. What update do you talk about? OS update of your NAS (to QTS 5.0.0) probably? If yes, did you try and rebooted your NAS again (I know that a reboot is part of the update process already but sometimes things might just hang/take longer to settle after a firmware (OS) update).
Just saw your other post that explains your situation a little more.