I have had the same crash for a while now in my Necron campaign. I figured i'd wait to post here when i read there was an update with bug fixes, but that didn't fix it.
I restarted my campaign after the beta and have conquered the first three systems. I just completed the mission (where you need to kidnap a white scar) in the 4th system (Agripinaa). When I end my turn and go through the AI's turns in the first system it always crashes when for some reason the Necrons are now part of the Enemy AI turns.
Does this have anything to do with that I suddenly own Agripinaa and a planet in the Nemesis Tessera sector? I thought the Agripinaa bug I read about was only for campaigns started from before the release of the game? Thanks for any help, I would really like to get back to the campaign.