Obviously you mean "runs great under Vista 32" because
DVD Fab Platinum won't even install on Vista 64 let alone run on it. The only point of Vista is the 64 bit release so 32 bit compatibility doesn't qualify as "Vista Compatible". Programs must run on both versions to be considered "Vista Compatible".
If anyone has managed to get DVD Fab Platinum to install and run on a Vista 64 system, please post your method and results.