Catch up era-mechanic tooltip loads okay. But maybe this is the trigger? 

auto-save 231.ctr

I've also included the save of the turn before. auto-save 230.ctr

Same problem. I even managed to save the game another time inbetween the first load and the crash. Loading the second save didn't change anything, though. The game crashes after approximately 5 seconds. Must have something to with what the AI is doing (or trying to do). In my game this happened on turn 121 in the last era (of the demo).

Hey mates,

Just a small update : we are aware of the crashes and are currently testing a fix. An update should be rolled out very soon.

Thanks for sending your logs, it really helps <3