Plug in could not be found

I’ve installed the waves Mv2 on my c drive.
C:\Program Files\Common Files\VST3 Waveshell-VST3 9.6_x64.vst3.
The thing is that Cubase 8 can’t find it, and that it isn’t in the plug in manager list.
I’ve removed all my waves plug ins en installed them again.
All of them are found except the Mv2, strange?
What can be wrong?