I recently made a spreadsheet important enough to me to make 2 copies - one in another directory and one on a CD. Now when I try to access any of them they all cause a "General Protection Fault at.....". I have made other sheets recently and they all work fine in the same programme, so I don't think it is the MS Works spreadsheet programme itself. I presume I did something wrong the last time this spreadsheet was open, and then saved the problem to my backup copies. Does anyone have any advice on what sort of thing would cause this problem, and what I can do to make the spreadsheet open again? Any help very much appreciated.