Making formulas work, which work on other computer

Hello,

My boss is using a large spreadsheet with multiply formulas in and has been using it for quite a while, updating the figures as and when necessary (created by someone else not me or him)

Today he has tried to update the spreadsheet, but nothing is updating after entering in the new figures.

He has emailed it to me, to see if I could do anything, but it works fine on my computer.

We both have the same computer and programmes.

Can anyone help? Any help would be very gratefully received.

Thanking you in advance.