I only tried for a couple minutes, but wasn't able to reproduce the crash.

I had just placed a section of Solar Panels and then ran towards some water. I accidently ran into the side of the water instead of beside it, then the game crashed. 0.002 2016-05-22 08:54:39; Factorio 0.12.33 (Build 18092, win64, steam) 0.002 Operating system: Windows 7 Service Pack 1 0.002 Program...