Forge: 14.21.1.2443 for 1.12
Industrial Foregoing: 1.12-1.1-24
Mekanism: Homebaked 9.3.3 (https://github.com/thommy101/Mekanism/tree/1.12_firstpass)

Anyway, what happens is a server mate of mine places the Harvester, and attempts to power it with Mekanism Cables, which causes a crash. Other RF Transportation mods appear to work fine, just not Mekanism cables.

Crash Report: https://pastebin.com/B3At7Rp2

If I need to report to someone else, please let me know :P

It just got reported where it belongs so don't worry about it MinecraftModDevelopmentMods/Tesla-Core-Lib#7