I noticed you made a reference to Fieldset_menus on the page to this project. I can only find download pages for it, no main project page. From what I can see you also were part of fieldset_menus at some time. So, what happened? Has it been removed or just something funky happen to the project? If it's been removed perhaps a project page with some explanation that's no longer being supported or something so us people already using it at least have an idea of what's happening could be done.

Sorry, I couldn't find anywhere else to mention anything about it with the whole project seeming to have disappeared, except the download pages, curiously.