1. No. I'll have to do a reinstall this coming week if that's needed.
2. That's the thing. There is no evidence of a separate VST3 version for VE Standard (as opposed to VE Pro, where I read in an older thread that there is a dll file with "III" appended to the filename). VE Standard is part of the Vienna Instrument Standard installation. The manual for VI Standard specifically mentions that VE Standard supports VST3. It does not mention a separate dll file.
Hopefully I can get to all this tomorrow. Thanks again for all your help.
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