Hello, thanks for reply Paul.
1) The only file I found in the System/Library/Audio/Plug-ins/VST is the already installed Vienna Instruments standard plug-in which works perfectly in my three versions of Cubase. No Vienna Pro .vst in my computer ! Only the .component and the standalone application are installed.
2) Yes, I checked that it was the latest version... and I checked that before writing in the forum ! I tryed to reinstall it many times, no change.
3) Yes, I tryed to repair permissions many times, nothing happened.
I even tryed to open the installation package .pkg to see the "content" and I found no .vst in that package... So, in fact, I'm not able to put that VST in the right folder manually... It seems that someone forgot to put the VST in the installation package (of course, I hope I'm wrong !)
I've no idea what to do next, and it would be very very very nice to help me find a solution.
Thanks