I have experienced the same bug.

If I get into a train and move it, the game crashes. I suspect the problem relates to path resolution for the train.

Here is my log

0.000 2019-06-07 22:19:54; Factorio 0.17.46 (build 45521, win64, steam)
0.000 Operating system: Windows 10 (version 1803)
0.001 ...