So you say “This time it happened when I tried to add a plugin as an insert to a group”. When did it happen the other times? Any concistency - and maybe a crash report somewhere?
I’m not sure where to look for a crash report. I just had a complete system halt. Not even the courtesy of a BSOD. I was tweeking the HDSP mixer when it happened. I’m going to see if a new RME driver will help…
Adding or swapping VSTi’s seems to be an occasional trigger. Also, changing or adding plugins on inserts.