CountIF Function On Linked Spreadsheet
 

I have a summary spreadsheet, "April Daily Revenue Impact.xls" that has a tab
for each day of the month. Also, for each day of the month there is a
seperate spreadsheet that contains the orders for each day. The tabs on the
summary spreadsheet should look at the daily order log and summarize the
quantity of orders and the revenue impact of the orders by region. The
Sumproduct function works great for the revenues. However, the Countif
function will only function if the corresponding Daily Order Log is open when
the values are updated, otherwise it returns "#VALUE".

The function is entered as: "=COUNTIF([04042006.xls]Master
Worksheet'!$C$3:$C$83,A4)" where Row "C" is the Region on the 04042006.xls
Spreadsheet and Row "A" is the same regions on the summary spreadsheet. When
the corresponding Daily Order Log is open, the function returns the correct
values.

Any help would be greatly appreciated.