With the attached save file I can no longer end the turn. When I click the button, nothing happens.
I'm about 360 turns in to a game on a medium map.
Save File: http://dl.dropbox.com/u/10609996/broken.EleSav
DxDiag: http://dl.dropbox.com/u/10609996/DxDiag.txt
PC is a Core 2 Quad Q6600
8GB Ram
2x 8800GTX in SLI
Windows 7 Professional