I sent a note to NI tech support with the details and am waiting to hear back. Since it's been almost a day, I will probably just proceed with offline registration, like I did 4 years ago. It was a challenge / response thing, where they send you a file that you port via usb stick over to the daw.
Regardless, literally the only change on this box was installing X2 and then the X2A patch. Very very clearly, there was something to do with the install that hosed my plug manager, because my plugs are different now in S8P. ONLY change was X2A. I read of others stating where the X2 messed with the plug layout of older Cake installs, so I am not the only one with such a situation. I should probably try a full re-scan (with reset failed plugs checked off) in S8P first. (This is by no means my first upgrade of a Cake DAW - see signature.)
- Ed
PS, Glyn, thanks for the link! I will go down that route (again) if the rescan doesn't do it.