What I noticed is that you built exactly on the last top tile of the border AND on the side borders. Some players had some crashes in the past doing that, some of those crashes had been fixed by Klei. The first day in the beta when meteors where introduced in the game, I remember that there was a really long cpu lockup delay of 2-4 seconds on meteor impact. That was the time where dupes where flying in to the air on meteor impact. I think I had a crash on that, but its so long ago - C