Let me explain. V9 - and all the plugins you own by name, ‘SSL4000’, ‘Kramer Tape’ etc., are installed on your system during the V9 install. In fact, it’s the V9 engine that lists all the plugins you might own - and - as you select the ones you own, they are updated and installed along with the V9 Licenser. All the other V7, V8 plugins are now obsolete to V9.
But you will need to MOVE the ‘keys’ to the versions you own - they will be sent to the Cloud within the V9 Waves License Center - and place these ‘keys’ onto either a HD or a flashdrive, your choice. Then when C6 opens, it will find the V9 wrapper and all your plugins.
True, there are people here that are using the V8 installer, but I don’t know why. Well unless the plugin is obsolete? I mean, I might misunderstand the Waves update program, but for me, when I bought my 32 bit plugins, the 64 bit versions arrived within the year and I moved right into the 64 bit versions. I am thinking that Waves would at least give the owner the option to use either 32 bit or 64 bit plugins? Contact Waves about this.
Or try it, the V9, and see. All the earlier installers are available, you can revert to them if you run into a problem.
Finally, you will need to hide/move the V8 wrapper and it’s plugin versions from Cubase - such that it only finds the V9 wrapper. Me, I just deleted V8 & it’s plugins when V9 was up and running.