I was in the process of setting up a TIS-3d machine adjacent to a track with an active train on it because I live dangerously (and was in creative), and was taking the time to lock the interactions between redstone modules when the train came by. Game crashed. Log here:

crash-2018-07-16_17.17.29-client.txt

The conditions require computer and train to both be in view, while holding the key, while sneaking and train passing in front of player. Computer being behind train may be necessary.

Forge 2705, TIS-3D-MC1.12-1.3.1.17, ImmersiveRailroading-1.2.1_1.12, trackAPI-1.1_1.12, no other mods present.

You're my opaque execution platform hero.