Try re-registering the formulas *after* you install the Add-In.

Select a range of cells containing some of these formulas, then:

<Edit <Replace
In "Find what", enter
=
In "Replace With", enter
=

Then <Replace All
--
HTH,

RD

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"Ray" wrote in message
...
I have used the EOMONTH function successfully. But I transferred my
workbook
to someone who did not have the needed add-in installed so it generated a
#NAME? error. So I installed the add-in on his computer but it did not
resolve the #NAME? error. I took his workbook and put it back on my
computer
and it still generates the #NAME? error. But if I open my original file
the
EOMONTH works. I can flip between the two open workbooks and see the
error
on his file, but not on mine. Tried F9 to force a recompute, no help? Any
ideas?