I've had that a couple of times - it's when I leave FARR running during the update, it gets closed down & I get that message
Didnt think anything of it cause no problems after
EDIT/ think it is normally closed down so plugins get reloaded on restart & for some reason there's a problem with that.
I've had problems lately with shutting down computer (hangs) and I'm not sure how to find the culprit - just mention it cause FARR still running at that stage