I have been able to play for a very long time before the game runs out of memory and I need to restart (note I haven't been reloading except where there have been crashes).  However, a long grind level, which I think I would have been able to win (love ice and fire mages btw!) got stuck after I won a battle and then got attacked again (first Wildland Ice Elementals attacked and lost, then Gilden attacked with an army and lost, and then they attacked again and that was where the game wouldn't go to next turn).  I loaded an autosave and had one more big battle, but then was unable to end turn.  This is that save.

Btw: guys, if you want to see the results of an advanced game slogging it out with warg pikewomen and ice and fire wargmages, with a custom sovereign and faction (and without Pariden's super-powerful magic outposts) you might want to download the game too!  Just don't download it too many times because Dropbox might put a penalty on my account.

Here is the game with the end turn bug:

http://dl.dropbox.com/u/8710134/Season%20452%20Unable%20to%20End%20Turn.EleSav