My little-used K100 D shows Memory Card Error in the screen every time I try to use it. There's nothing wrong with the card and I have tried several others just to be sure. Same result every time. I guess the camera is scrap?? Anybody had this problem and managed to fix it or find anybody else who can fix it? Batteries are fine. Everything else seems OK. I quite like this camera and am reluctant to scrap it. Any suggestion/help much appreciated. Peter H