a serious error has occurred inside the plug-in MasterRig

I just purchased Wavelab Pro 9 today but as I am testing I can see that one of the best new feature isn’t working here, ie the MasterRig (see attached picture)
Even though The warning says that Wavelab could deal with the issue, then nothing load and I end up not having access to this new feature. As i am new to wavelab pro 9 I am not sure that it is the only issue I have… maybe more are just waiting to be found…

I have windows 7 Pro / Cubase 8.5 / UAD2 cards with plugins…

I have tried to reinstall the program, I have re scanned the plugins and I read some threads on this forum but none seemed to relate the same issue…

Please can anyone help me?
wavwlab_Masterrig.jpg