I have a 50d that I bought right when they came out a year and a half ago. A few days ago I went out and shot with it no problem at all. The next day I put my card in and it said something along the lines of. "Card not formated to this camera." I then tried to format it with the 50d and it would not work. I know my card isn't messed up because i can use it in my mark II and it also does it for all of my other cards. Can Anyone help me out?

