Try another card. Cards do wear out.
Bob
I have a Canon Powershot A80 with a 256MB card. I took some pictures and went to upload with my card reader and now my computer is telling me that I need to format my card. I have used this same camera, card and card reader for ovver 3 years now and never has this happened before. I have rebooted my computer, reformatted the card in the camera and still, my computer tells me I need to format the card before uploading.....What is happening?

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