The source hasn't been posted anywhere, no. That said, there's only a very small handful lines of code to loading the plugin specifically to get it in the menu bar. Those lines consist of the loading of the logging framework configuration, and some lines to grab the image files out of the inline resources. The configuration to get it to actually show up in the ribbon bar is actually basically all through an XML file that's installed during the installation of the add-in to office (i don't know where MS Office actually stores these), and not any actual code. It could be tripping up on grabbing out the image files for some reason. I can put together a build later with some extra debugging around that, and see if that yields any results.
The other log entries for loading the modules actually happen when you click a ribbon button, though, so it makes sense that you wouldn't see those if you don't have the buttons to click.
