I'm using VSTO with Visual Studio 2015 and testing the add-in in Excel 2010. On the left side of my ribbon, there's a text showing "Custom Toolbars". How can I get rid of this text?
Solution: Thanks to @Cindy Meister insights, I went to the properties of the "OfficeRibbon" and clicked on "Tabs" properties. On "ControlIdType" (under "ControlId" option) I chose "Custom" instead of "Office" (which was the previous chosen option) and then the "Custom Toolbars" message disappeared.