Help, I have been creating a workbook in Excel 2007. I then sent it to someone and when I tried to reopen the workbook it says it's in compatability mode and i can't view any of the other worksheets in the workbook. I hope I haven't lost it all. I have tried to save as something else and as a different format but it doesn't work. I only have 2007 on my PC so not sure how this has happened.