Why does this formula not work?
=IF(I42="","",NETWORKDAYS(A42,I42,NonWorkDays2008)-1)

NonWorkDays2008 is a defined name in another worksheet of the same workbook.

I had the NonWorkDays2008 as a defined name in another workbook and this
workbook linked to it but that's a nuisance with a file that's on the move
between computers and even companies! So, I put the NonWorkDays2008 in the
same workbook, different sheet, and defined it as such---NonWorkDays2008. I
removed the link in the formula to the other workbook and inserted the name
from this workbook in the other worksheet. But no matter what the dates are
in the cells to which the formula refers, the answer remains as it was when
it was linked to the other workbook.

This is a mystery. I can't figure it out. Can anyone? Connie