I’ve created a new addin for editing and validating Ribbon customUI XML. It’s a form that lets you modify ribbons in workbook and addins. Here’s a couple of screenshots:
YouTube Video and customUI Ribbon XML Editor
Here’s a YouTube video! yoursumbuddy’s first!
Here’s the link to the yoursumbuddy customUI Ribbon Editor page, where you can download it and read more.
Please let me know what you think.