Linked save contains a situation where I cannot advance turn.
http://dl.dropbox.com/u/8682302/vr4.EleSav
http://dl.dropbox.com/u/8682302/debug-Turnhang.err
I've traced the problem to a transport on autoexplore near an opponent boundary. Moving it away processes the turn. Perhaps it's trying to move in and failing due to a lack of war?
Edit: I've also had this issue occur at a map edge.