[0.11.16] Crash when adding cargo wagons to train

[Kayanor]

I just discovered that the game crashes with the new "unexpected error" message when I add cargo wagons to a train.

But I kept the mouse button down and walked next to my rail to place them.
One time it crashed after the 10th cargo wagon, else it crashed after the 31st cargo wagon (limit?).

factorio-current.zip

factorio-previous.zip

Meh.zip

Steps to reproduce:
1. Start up the map (no mods are needed)
2. Take the cargo wagons and place them while holding the mouse button down and running
3. After some cargo wagons, the game will crash

[kovarex]

Thanks for the report, it is fixed for 0.11.17 now.