Hi David,
I think that the TestRibbon example had separate sections for Excel
2007 and Excel 2010, and that the section for Excel 2010 is basically
empty. (I thought I improved it for the release of v. 0.29, but can't
check right now.)
You might like to have a closer look inside the .dna file, and take
out the section marked for Excel 2010. Then it will load the Excel
2007 tab, which has a button or two.
-Govert