Finally got all the presets back.
I couldn’t see the Preferences folder that you referred to ( aside from the Preferences panel when you open Cubase itself)., so I looked at a couple of videos on You Tube, which were helpful up to a point. I then found an old article on Google from Sweetwater called “My Plugin Presets are missing”. Using a mixture of what that said , the videos, and what you advised I was able to easily get the presets back. Here’s what I did:
- Close Cubase
- Press Windows key and R at the same time
- Type %appdata%
- Open Steinberg Folder
- Open Cubase 12 Folder
- Delete file called “media bay”
- Relaunch Cubase
Thanks for all your help