OK, thanks so much, I think we're getting to the rub of it. I don't see a VST3 version of Vienna Ensemble Standard. I've read the thread where a VE Pro VST3 version is described with the "III" in the name. But I don't find that in my installation of VE Standard. I installed that last summer, so I don't remember whether there was any option to install one that I might have declined, but I didn't have Cubase at the time so that might be possible. I've looked at the dll files and my two options are Vienna Ensemble (32 bit implied) and Vienna Ensemble 64.
Synchron - Woods, Brass, Perc I, Str Pro, Elite Str, Duality Str & Sordino, Prime Studio - Woods, Perc, Solo Str, Ch Str, Orch Str, App Str, Harps, Choir Studio Dim - Brass, Strings VE Pro, MIR Pro 3D, Vienna Suite Pro Cubase 14, Studio One 6, Dorico 5