My sovereign and one other NPC were in a stack next to an enemy army consisting of one four man squad and two lone warriors, six enemies total. I saved the game before I hit next turn and every time I reload that game I get the close to desktop. Debug files can be located here: http://dl.dropbox.com/u/8958928/Elemental0_806-2010-07-11T09-55-22-508.zip
