Report "I put a 4.0 gb sd card into the camera slot correctly. The camera says that the card must be formatted to work correctly. I format the card, but it just tells me I need to format again. There were pictures on the card initially and after the C643 tried to format, I rechecked and there were still pictures. I deleted all the pictures, and then tried to re-format, however I still get stuck in the format again and again loop. What exactly can I do to correct this problem?"