You could try re-flashing the card. I think the Viper is actually just a DKB Cobra so it won't recognize the memory on the card with OS3.1. There's a flash chip on the card (a Xilink perhaps?) that needs the scsi flash update to make it compatible with OS3.1. Otherwise, you could put 3.0 roms in your machine to make it see the memory and use the machine like that. This was a pretty well documented problem with the original DKB flash rom software which the updated scsi install disk reportedly fixed. Your mileage may vary of course so if you are worried about reflashing the rom just change the roms on the A1200 motherboard back to 3.0.
