In Excel 2007 (I'm on SP2), if I enter this formula:

=SUM(A65537)

It works fine. But if I enter this formula:

=MYUDF(A65537)

Excel turns it into this:

=MYUDF(#REF!)


That isn't the UDF's fault' Excel is doing that before the UDF has the
opportunity to do anything at all. Is there a workaround or fix?


Thanks,

Greg