So, I downloaded the 1.1.7 patch on my laptop, copied it to my computer, put the new data into my Insurgence folder, and no matter which save file I load, this always happens. If I click OK or "x", the game closes itself. So basically, this bug prevents me from playing the game.
This is weird, because I can play just fine on my laptop, with the same save files, and the Insurgence on my laptop is also on 1.1.7.
And back then I can play on both laptop and computer with no problem.
EDIT: tried a fresh full download of 1.1.7. on my computer, but it doesn't work either. The bug is still there.