I think this may be a VST2 vs. VST3 issue.
I have been trying to duck a vocal. I had done this successfully in an earlier project using the Izotope Neutron Equalizer. When I tried to repeat this technique, my Neutron EQ would not display the side-chain button in the top bar. I went back to the old project and found that it did indeed present the side-chain button, so what gives?
As I dug into it, I see that in the Inserts pull-down, the Izotope products appear twice (see the “pulldown” file below.) They appear under Izotope / EQ, and also under Izotope directly. I assume one set is VST3 and the other set is VST2, but I can’t see any way to differentiate between the two. As you can see from the other screen shot, one has the side-chain button and the other does not. I assume it is the VST3 version that shows the side-chain button, but how can I tell which is which?
More importantly, how can I tell Cubase to not display the VST2 versions. I need the VST2 versions for other programs, but I don’t want them showing in Cubase. SONAR has a feature that automatically disables a duplicate VST2 dll if its VST3 twin is also present. Is there anything like this in Cubase? And manual way to get this out of my Insert menus so I don’t make the same mistake again? I don’t want to remove the VST2s from the folder where they are resident, and that folder needs to be scanned because it contains some VST2 plug-ins that I do need under Cubase.