XIRR - Function Missing

[OS]

Hello,
I used XIRR many times in the past but today when i tried to use it, i
couldn't. I checked the Data -->AddIns and the ATP is clicked so i don't
understand why it's not working. I'm using Excel 2003 and as mentioned before
- used XIRR many times in the past.
I also tried to check and uncheck the ATP and even restart the computer, and
I still can't find the XIRR.... any ideas why this is happening and how I can
fix it? HELP!!

Thanks!

 

[Fred Smith]

What error do you get when you try XIRR?

Regards,
Fred.