I have recently had a problem with them reading my SD cards, it seems that if i use the card in a different cam then it won't read it. I formatted it on my computer, tried it and it worked. Then viewed the pic in my digital to see if took a picture. Put it back in the cam...tried it again and it didn't work, so I formatted it again and put it in the woods and didn't mess with it. I had it out for 2 months this summer with 0 pics, it wasn't reading the card right. I think I need to get a new card that only gets used in the cuddeback.