When using camera, a memory card error was given and all stored photos inside this camera memory card could not be used. Picking this card out and connecting it to computer via a card Reader, a not formatted error message was also given. And the stored stuffs also could not be accessed. Is there something wrong with my camera memory card? Do I have to format this memory card for accessing? Is it possible for me to rescue these stored stuffs? Any idea? Please answer me soon! Thanks!!