I also get that blank box on Windows with Cubase 10; can only connect the option with the 3 dashes.
I'm a bit confused about the labelling when I open the "add rack instrument" box.
I have two options for VE pro: "Vienna Ensemble Pro" with 3 dashes after it, and "Vienna Ensemble Pro x64" without any dashes.
The second (faulty) option (Pro x64) is VST2 and presumably the "x64" means it's 64 bit.
Is the first option (with dashes and no "x64") therefore VST3 and 32 bit?
Only bought VE pro yesterday so I'm sorry if it's a silly question.