Could it be the CONCATENATE function that is causing the error?


"Dave F" wrote:

Some functions do not work when they reference closed workbooks.

Given the description of your problem, you are likely encountering this
limitation with one of the functions you are using.
--
Brevity is the soul of wit.


"Hanr3" wrote:

I am trying to pull information from another workbook and only get an error
when the other workbook is not open. When the other workbook is open, all is
well.

Here is the formula.
=IF(COUNTIF('[EP01Jan1-2-4-07.xls]Eff'!$AH:$AH,CONCATENATE($C3,$B3,$C$2))=0,"n/a",SUMIF('[EP01Jan1-2-4-07.xls]Eff'!$AH:$AH,CONCATENATE($C3,$B3,$C$2),'[EP01Jan1-2-4-07.xls]Eff'!$Z:$Z)/COUNTIF('[EP01Jan1-2-4-07.xls]Eff'!$AH:$AH,CONCATENATE($C3,$B3,$C$2)))

Looking for any help I cna get on this.
Thanks