If the firewire cable is connected to the RED port on the back of the CS Rack, then that's your problem. It is a known incompatible port on just about everything we carry. That's why we add the extra PCI firewire card, which sits all the way on the right-hand edge of the Rack's case, if you look at it from the back. Move the cable to that port, reboot and try again.
If you ARE in the firewire port(s) on the installed PCI card, then please call us ASAP.
Lead PC Install/Repair Tech
Sweetwater Service Dep't