Ola Waves.I have similar problem…Besides 16 plugins V10, I have six V11 + 2 plugins V12. Bt d interesting fact: when I used V11 of F6 Floating Band-Dynamic EQ on WiN 8.1 x64 system,it worked (Cubase I think,or Ableton) without a glitch.I’m no IT expert, but on Win 8.1 I truly didn’t have any issues.
I talked to couple colleagues from States,France,India & they all say just starting thinking about all d ‘acrobatics’ needed to b done to get d plugin u paid for to work. I jst don’t understand,it says dat all plugins (new Version 11 or 12) during install (auth.+ reg.) also automatically authorise V9 & V10. Is it really so difficult to add to WCentral an option to switch d vesion. Cuz dat offine installer is bigger then 4 Gb (yeah Giga), wouldn’t it be nice to go to legacy page & download WCentral V10…I mean, like I said I will not do anykind of reinstall acrobatics cuz Waves throws out so many files all over d computer, even files from '08 & '09 (dat must be cuz of v9 I presume). So in conclusion, I will leave it all as it is, and hope dis health situation gets at least a bit more normal, and go for new laptop.
IDK(I don’t know) why I have a paranoia, dat my plugins which are not activated dis moment,
dat I will lose them.
Take care guys, and I wish all of us a virus-free year 2021.