Crashed early on in my save. The screen froze, the player moved away about 100 spaces, snapped back, then the game crashed:

0.009 2017-04-24 19:24:01; Factorio 0.15.1 (build 29050, win64, steam)
0.009 Operating system: Windows 10 (version 1607)
0.009 Program arguments: "I:\SteamLibrary ...