I have been using my Lecia D-Lux 3 for a year now. Always turned off and on when USB cord was properly attached. I recently downloaded some images to my Grand Parents computer. Now I have a "Memory Card Error", "Please check the card" message that comes up every time I turn on the camera. I am unable to use the camera with this message on the LCD. Note: I use a "apple" and they have a "dell / pc". Is this an issue where the card has become corrupted by the PC... is there a way to change this and fix the card? Stumped.