[cctalk] SCSI2SD v5.0a problems

I am trying to use a SCSI2SD v5.0a SCSI to microSD adapter card, but it does not seem to work properly. When I run the scsi2sd-util on either mac or linux, it sees my board over USB, but it is unable to save changed options to the device. I am using a PnY 16GB microSD card. I've also tried a 32GB card. I've also tried a different USB cable. I have two of these boards and they both behave the same. Does anyone have any experience with these? --tnx --tom