I have a similar problem: i recently bought a 16gb USB stick to store my 4gb of photos on. They transfered ok so i deleted my 4gb stick. Then when i went to copy a picture to another file from the 16gb stick i found that only half will open (the other half are only show as jPeg symbol) and i can not copy/print/move any of my photos...aaaaaarrrrggghh.
It's so frustrating.
Can anyone help, please??