Thanks, Aaron.
I have contacted Jorway, but they haven't replied yet. The error message came from the Fermilab software, which is an executable VI, i.e. it requires LabView Runtime, i.e. it has no diagram to look at (see http://www-esd.fnal.gov/projects/fermitools/CAMAC_LabVIEW_Setup/CAMAC_LabVIEW_Setup.html for the link). Their software is written for the AHA2940 SCSI card.
Cheers, Phil.