Kona LHi - CalDigit S2VR crashing

Posted a similar thread in the CalDigit forum but was wondering if anyone here might also be able to help.

Have a new 8-Core Intel MacPro. Snow Leopard + FCP7. LHi in slot 2. CalDigit FASTA-4E in slot 4 controlling external CalDigit S2VR. Latest drivers from AJA and CalDigit downloaded today.

Did the following in this order:
-All Apple software updates.
-Installed FCP7 and ran it once to confirm operation. No issues.
-Apple software update again, this time included Pro App updates.
-Installed the LHi and the CalDigit controller card at the same time.
-Rebooted, installed CalDigit drivers and control manager software, then shut down normally.
-Connected SATA cables, turned on the S2VR then the MacPro.
-Booted normally, S2VR appeared on the desktop. Could access data.
-Installed LHi drivers and rebooted.
-The minute I double-clicked the S2VR HD on the desktop the MacPro gray screened asking to hold power button to restart.
-Now every time I start the MacPro it gray screens and asks for restart the minute the desktop appears.

Conflicting AJA/CalDigit drivers? Firmware issue with the drives?

Any help greatly appreciated.

Thank you!