Missing SD card in Sat Nav

THanks GB, I think I know these devices pretty well, it took Mazda 12 months and 6 head units to get the satnav and tomtom live to work in my car! Once it works its a good satnav because it allows detailed itineraries to be created (on a PC and uploaded to the sdcard) that I create for every club drive. I also find the music features using the USB stick pretty good once you have the right naming conventions.