My SpacePilot Pro ceased working in Max 2014 since my install of 3.0. I downloaded the latest drivers for my mouse, but that didn’t resolve the issue. I will be calling 3dconnexion at 10am ET to see if there is a fix.
I remember vaguely issues with 3Dconnexion from a long time ago so I doubt that it’s anything related to 3.0 in particular. Does it connect through a USB port?