Have you ever open a 3dsmax that never get into the main interface? You probably have the raysat_server blocked by your newly installed firewall (yeah, especially ZoneAlarm!).
Simply enable it access to your trusted network (no, you don't need internet access for it) and voila! You have got your 3dsmax alive again!
For those who still can't access, halt & crash at loading mentalray.dlz, check whether you have block port 7000 or 7700. Try it, and you could save your life especially during crunch hours.