I have 2 TAWS/terrain data cards for my GNS 430W. Today, I tried to update the obstacle database, and Garmin Database Manager won't recognize the cards-- the yellow light is on the programmer, and the card name flashes briefly on the screen repeatedly for both cards. iwas able to easily update my navigation data card. I have seen discussions on other forums of a data card repair utility for terrain cards. Where can I find this?