Thanks for your suggestion.

I think my initial problem was that the installer was defaulting to C:\Program Files\Common File and not C:\Program Files (x86)\Common File where Reaper was looking.

I’ve also managed to get Equivocate VST2 installed successfully (but same issue trying the VST3 install) so now I’m up and running I’ll just stick with the VST2 versions and leave the VST3 conundrum for another day.

Cheers