Rewire disappeared

Hello all,
Rewire disappeared after installing Nuendo 5.5.2, it didn’t reappear after 5.5.3.
No Rewire item appears on the devices list, nothing rewires!
I’m on OSX 10.6,8.
I installed rewire 1.7 for Mac from the propellorheads site, no help!
I have a Nuendo 5.1.1 version enabled, rewire functions 100% in that version!
Whst’s going on??

Ties van der Linden