Hi
The fix is easy :-
Click on Tools
Click on Protection
Then click on Unprotect sheet
The sheet can now be edited
Cell AR35 and AS35 both need to be changing from 1 to 2
That done re-protect the sheet by:-
Back to Tools
Click on Protection
Then click on Protect sheet
Leave password blank and click OK.
I have uploaded a fixed version to the DBMM.org.uk site.
Best Regards
Geoff