I am having troubles with excel 2011. Every time I open this file, I get a dialog box saying that budget.xlsx is already open and that reopening will cause any changes to be discarded. Also, every time I close the excel, it prompts me to save changes, even if i immediately exit after opening the excel. i make no changes at all. and i did some research and read about certain volatile functions. and there are not any crazy functions at all besides sum, average, subtraction, etc. I also noticed that when I make a new excel workbook, if I just input data, I do not get this saving problem. However, the instant I put a formula in there, like sum or average, the problem comes back and I get prompted to save even if i don't make any changes. help please! thank you!