On Fri, 22 Dec 2017, Brian wrote:
You too can be privy to the secrets of the Almighty. Look in /var/log/apt for the logs. What was the upgrade on? Stretch?
He was kind enough to reveal his secrets: about 465 upgraded packages (on Jessie) Fortunately, what an upgrade broke, an other upgrade has fixed: I upgraded from Jessie to Stretch (which took a rather long time) and after that all the scanners are seen again. best regards, -- Pierre Frenkiel