this is happening with my system and i have a nvidia card as well. i will send some dump files when i get a chance. The memory error is only happening to a non-campaign game, around 115+ turns. i can load the game and maybe get a turn or two in before crashing and getting the error again.
Also, in campaign mode at exactly turn 1050 the game becomes unresponsive to almost everything. it doesnt crash but i cannot click anything in the UI. i can go to the menu screen and exit that way or load a different game. If i load a previous game it will work fine until that turn. It seems to be running as expected before that... I havent tried restarting the campaign yet but i am going to. Not sure if this is related but it seems like some type of memory glitch.
win 7 64
Geforce gtx285 1gb
Core Duo q9550 2.8
8gb ram
elemental v1.5
just rebuilt so all drivers are up to date.
i know this is a vague discription but i dont have time to be specific and will try and get windows logs and elemental logs uploaded asap.
I hope this helps and am looking forward to a polished game soon.