Hello,

Is this happening on Standard reports or only Custom Reports?

I found the following Article which may be helpful:

http://kb.sageintelligence.com/index.php?title=Change_Month_Add-In_is_Missing

You can also check your Excel:

File > Options> Customize ribbon > Main Tabs> Developer Tools

Hi Helen

Thanks for your response. This happens when running out a the standard Financial Report D-3-4 (AE-SQL); customized in the sense that other tables from the Sage ERP database are queried in a union report for additional data. We were recently upgraded to Office 365 / Excel 2016 from Excel 2010 and there may be an issue with the Excel versions, so I will be following up on your suggestions.

Glad I could help.