Hi! I own a Nikon D50 and have recently bought a brand new Sandisk Extreme III 4 G SD card to replace my old Sandisk card. My problem is that my camera will not recognize my new card and I get a CHA error message in my viewer. I still recognizes my old Sandisk card just fine, the only difference in the two cards being that my old one is a 2 G card instead of a 4.
I got the CHA error message on my camera several months ago and it would not play ANY memory card at all. I had to send it in and get the circuit board repaired. But ever since then it has worked fine with my old memory card.
I've formatted my new card in my camera and in my computer, but nothing seems to help. Does anyone have any suggestions?