There's a bug with viewlets ordering at Plone if you specify skinname="*", at product install time Sunburst layer is not available, so the order doesn't get right on that layer... Should be fixed at plone.app.viewletmanager.exportimport.storage, but as a workaround if you specify skinname="Plone Default" it works because Sunburst is based on it and the order is copied when Sunburst is initialized.
Merge branch 'master' of github.com:OpenMultimedia/openmultimedia.headband