I recently made the foolosh mistake of renaming the folder on a Lexar 80x CF card, replacing the DCIM designation with a name appropriate to the picture content of the shoot. I then successfully dragged the newly named folder to the desktop in the usual way. So far so good. However, when I reinserted the card into my Canon 5D, the camera told me to format the card. When I tried to do so, the attempt failed. When I inserted the card into the computer's card reader, it crashed the machine which also failed to read the card. Am I the only fool on planet Earth who has brought this problem upon himself? I now realise I should never have renamed the card's DCIM folder in the first place. Is there anyone out there with a solution? I don't want to have to dump what is an excellent CF card - not to mention the footing the expense of replacing it here in Ireland.