The game started crashing recently. After around 8 or so turns I get an error message, and my only options are to return to the game or to exit to Desktop. Clicking on Return to Game doesn't do anything, and I can only exit to the Desktop. I tried verifying the game files multiple times, but it didn't help.

This is the message I get:

Any help would be greatly appreciated.

I'm playing on a Mac OS Mojave, on a 2018 13" MacBook Pro. 

I have resolved the problem - just turn off Steam syncing in Save Game dialog. It is that functionality that causes game to crash.

Thanks, Endless Space support for ignoring all technical problems in this forum!