My Workbench HDToolBox will not handle my SCSI devices. I have a special SCSI_HDToolbox so my guess is you have another ToolBox somewhere.
My Tool Types are:
SCSI_DEVICE_NAME-1230scsi.device
SCSI_MAX_ADDRESS=6
SCSI_MAX_LUN=7
XT_NAME= XT
My Tools HDToolBox has no ToolTypes so my guess is you need the scsi.device name and it should work.