I located the vat files in Library/audio/plug-ins/VST/line 6. There was only one copy of each VST. I decided to delete them and reinstall from the 2.55 download. The VSTs were recreated in the same folder and, again, there was only one of each VST. I started Cubase and they would only open as though they were 32-bit. I checked the Cubase VST plugin page and it is pointing at this folder.