[SOLVED] by scanning plugins in stand alone mode rather than plugin mode.
I click Rescan (for 3rd party plugins both VST and VST3), it goes through the entire process and then it shows 3 Waves plugins and nothing else. It may be that the “Save As Defaults” button seems to do nothing. No acknowledgement, no indication of saving anything. I look at the results right after the scan and none of the stuff it says that it’s scanned is there.
I have had problems with Cubase (14.0.20 Pro, Windows 11 23h2) freezing after working with Scaler 3 for a while. But I will do more testing on this to make sure that it’s not something else.