Transferring images=parameter is incorrect

[wayoutwest]

Folks I have a couple images on my SD card that wont transfer to my computer. I have a SD500 elph with a 2gig sandisk ultra II card, I have been using a card reader to transfer the images and my OS is WinXP pro, but continue to get a pop up error saying:

"Cannot copy IMGxxxx. The parameter is incorrect"

I was able to transfer the images from the day before, earlier than image# xxxx, and after these images. But for what ever, I cant transfer, copy, cut/paste, move these images.

Any help or ideas would be great

Thanks

[another view]

How are you transferring the images? After the camera or card reader is plugged into the computer, try Start > My Computer and see if you can download the images this way - assuming you're using the camera maker's software. Once you get the shots out, re-format the card in the camera. Actually, I always re-format the cards before I shoot them again.