I purchased a CF card reader to use with my iPad. When I copy photos from it that were shot with my fuji s2pro dslr to my iPad and then return the card to my camera, I get an error message causing me not to be able to use the card in my camera. I have to then copy the photos from my card using a reader attached to my computer (to make sure they are all there) and reformat the card in my camera before I am able to use it again in my fuji camera. I have two fuji cameras - one upper level point and shoot and one dslr).