I have tried to reset the cell reference style back to A1 from R1C1 (Tools-->Options-->General tab-->uncheck R1C1 reference style), but when I close Excel and reopen it, the reference style changes back to R1C1 style. When I make the change I described above using the Options feature, it changes it for the current file and saves it with the file. When creating a new file in the same session, it keeps the A1 reference style, but when I close Excel and reopen it, it returns to the R1C1 style. Any ideas about how to return to the default A1 reference style for the next Excel session?

Thanks for any help!