Mephisto has always been my favourite rails publishing system , few days back I switched to mephisto edge, later i found most of mephisto plugins are broken on mephisto edge because mephisto edge is using rails engine system ,
So I ported Stephen Caudill's existing mephisto sitemap plugin on mephisto edge and now its available at http://svn.railshacks.com/projects/mephisto/plugins/mephisto_sitemap/
Currently I am looking at other plugins that is not compatible with mephisto edge , As soon as i complete I will make it available for public download
if you face any problem please make a comment here