Hello from a Newbie..I have a Casio EX-Z750 which has been working perfectly and is a great camera. However, I went to take a photo and although it will take it, it does not store it. It also is not very responsive to turning on/off. Finally after the red light flashes for approx 30 seconds, it shows CARD ERROR. I am concerned it may not be the card and something more. Has anyone had a similar experience with this model? I do not want to pay for a new card if it is not that but something else.