I have C# code which creates custom Ribbon in Excel (VSTO). There is some issues with functionality. I need that to be corrected.
Code uses Install Shield 2015 LE. So you need it to open project in Visual studio, or delete that installer and use any other (like wix).
Ribbon must work with Excel 2000.
More details and source code in private chat
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Please let me know, what you mean by functionality issue. Hope you mean installer functionality and not addon functionality. What office versions should the installer work on?