I have built spreadsheets in Excel 2003 using the EOMONTH formula with no
problems. I am now using 2007 but sometimes have to send the work to people
in 2003 format. THe problem is that the EOMONTH formulas randomly convert.
That is the speadsheet may work fine for months, then the formula will be
replaced with NA. Has anyone else seen this and are there any suggestions or
fixes.

Thanks