VST Connect not installed correctly???

I’ve made some tests but without success :

  • Removing all Plugins (VST/VST3) expect VST Connect.vst3
  • Removing ~/Library/Preferences/Cubase 9
  • Starting Cubase (to refresh the preferences)
  • Quit Cubase
  • Install Connect Pro 4.0.17
  • Starting Cubase and open VST Connect SE, which works
  • Quit Cubase
  • Starting Cubase and open VST Connect Pro, this fails

Just only to get clear, opening Pro results in two windows :
connect first window.png
connect second window.png
Nothing else.

So the first question is, which condition(s) aren’t given?

  • Missing item in one of the xmls?
  • Some hardware check failure?
  • ?

The second one :

  • maybe a privileges failure?