ok, thanks for looking into this. just wanted to post something before someone else got stuck playing one of these scenarios, like at turn 419!
definitely a memory issue as it seems to be working on machine with 12G ram

love the concept of the 2 'week in .... ' scenarios by the way. running into an issue were the engine aborts after saving or sometimes next turn (auto save ON). if you go back in you'll get the attached error and the game seems to continue, but now running both sides as Manual. to get back to a ...