https://gist.github.com/xKnightGamingx/8fcdae26f968cf420e7ac3272e296cb2

Crash is with newer Forestry not Forge. The likelihood a bug is broken because of Forge is highly unlikely especially when there's already like 100 other mods loaded. 😉

Therefore, duplicate of #122

Runs fine with Forge 14.23.0.2537, MC 1.12.2

Fixed, and yes, this was an incompatibility with the latest Forestry versions.