Steve2![]() Elite ![]() ![]() ![]() ![]() ![]() Posts: 750 Joined: 10/11/2012 Location: Annapolis, MD ![]() | Sorry about that guys. I just tried downloading the file from the forum and when opening it with Excel 2007 it says it found unreadable content although it claims to have repaired it. So, maybe there is an issue with downloading it from the forum. Here's a copy of the file that I've placed on Dropbox. You can try downloading from there using the following link: https://www.dropbox.com/s/wpld9rnfmsxtduh/Ov%20Sim%20Analysis%20Tool%20v1.12.xlsm Also, I searched for issues reading Excel 2007 files from Excel 2013 and there are some. One suggested workaround was to start Excel 2013 first and then open the file from within Excel rather than just double-clicking on the file to launch Excel. Steve |