I see.

Apparently help means if the ATP in not installed at all then you get
#NAME?. If it's installed but disabled (by unselecting it) then you'll get
#VALUE!.

But, I'm not convinced the ATP is the problem here. The op says everything
was fine until:

... he copied data into the reference section all the formula stop working.

This makes it sound like they copy/pasted text into cells that NETWORKDAYS
was referencing.

--
Biff
Microsoft Excel MVP


"daddylonglegs" wrote in message
...
If the ATP isn't installed you'll get a #NAME? error, not a #VALUE!
error.

That's what Help says, Biff, but it ain't so. =NETWORKDAYS(A1,B1) gives a
#VALUE! error if ATP is switched off............

"T. Valko" wrote:

If the ATP isn't installed you'll get a #NAME? error, not a #VALUE!
error.

when he copied data into the reference section all the formula stop
working

That's where the problem is. But, what does that mean?

--
Biff
Microsoft Excel MVP


"M Kan" <tipsoftheweek at gmail dot com wrote in message
...
Like Wigi, my guess is that he hasn't installed the Analysis ToolPak.
NETWORKDAYS is a function only available through the TookPak
--
Tips for Excel, Word, PowerPoint and Other Applications
http://www.kan.org/tips


"Lars-Åke Aspelin" wrote:

On Tue, 22 Jul 2008 13:28:00 -0700, rdevlin57
wrote:

Hi
I created a worksheet with some cells which work out network days etc
from
some date columns everything working fine.
I sent the spreadsheet to a colleague and when he opened it it looked
fine
to. However when he copied data into the reference section all the
formula
stop working and return #Value#. As far as I can tell the formulae
are
correct. Retyping them has no effect.
The only difference I can see is he is running excel 2003 sp3 whilst
I
created the workbook in exel 2003 sp2.
I get the same problem whenever I put new data into the spreadsheet
if
the
machine is running sp3.
Is this a known issue and is there a workaround or am I goosed on
this
one?
RD

And how does the formulas that give the error look like?