I installed Omnisphere today on Windows 7 64bit and using the Cubase VST bridge it crashes and freezes. I then thought to use JBridge, just like I have with Vista 64 under cubse, but NO- Omnisphere keeps bringing up the authorization screen with no challenge code. What is funny is that it is authorized under the crappy (and non-functioning with most vsts) Cubase VST bridge.
Oh well, back to my 32 bit Vista drive. Maybe I shouldn't have overwritten my Vista 64 drive with Window 7 so soon.