Hi,
I am not sure, but please check the ranges used in that box for the spread
sheet. You may have used sum(D2:Z2) and the data has extended beyond Z2. While
I do not know of a maximum number of things that can be added, etc., You may
also try sum of the first so many things and use that value as part of another
sum.
Howard MorrisPS. It would be easier for us if you sent a copy of the spreadsheet and tell us which cell you are getting erroneous results.
