Hi Zack,

Thanks so much for responding. I can't post the link, but I can email you the file. Will that help? Yes, this is the only file for which I have received that error message. I was using Excel 2007 and not the viewer. Yes, this was the only version of Excel 2007 on my machine. I haven't tried to view it on another laptop. The file is a template I downloaded from Microsoft Templates. It allows me to keep track of the time and projects so that I can bill my clients properly. I don't recall exactly what I have already tried. I do know that there were other threads with this same problem and I tried the solutions listed on them. Thanks. Please help if you can!!!