The game crashes when you try to break wires/pipes.
However, in the creative mode, these blocks break without problems.

1. Put the pipe / wire.
2. Try to break it in survival mode.
3. Re-enter the game.

Forge 12.18.3.2185
Mekanism-1.10.2-9.2.4.103

Crash-Report: pastebin.com/i6GePj7q

looks like a treecapitator issue

This is indeed so. Thank you.