I have developed Excel-2007 Add-Ins using vb.net. and its working fine. but when we open the older sheet created using this add ins it shows the "Print_Area Name conflict" error. plz can any one suggest how i solve this issue. screen shot attached.

Thanks
Mitesh
I found a discussion on the Excel Google discussion group which describes your problem, as well as a way to address it. The source of the problem is that the Workbook contains a user defined range named "Print_Area", which is one of the range names that Excel itself uses and manages by default.