Hi All, a big thanks for all the contributions. The problem is solved.
I started with the most easy option, move the VMWare app to the recycle bin with "put back" moving it back in place. Started VMWare and quitted again. System preference security wanted me to allow VMWare to make changes. I unlocked the pane and clicked allow.
Started VMWare again.
In a terminal window I grep'd for VMware processes and YES, there it was: /Applications/VMware Fusion.app/Contents/Library/vmware-usbarbitrator
Hopeful fired up the Windows 7 guest, connected a USB stick and yes, now VMWare asked me to which platform I wanted to connect.
Big thanks again!
Yvo
