Installing this mod alongside the mod Hostile Trees and then attempting to mine a tree triggers an unrecoverable error on line 181 of this mod's control.lua. It's an on_entity_destroyed function, line reading "if not belt.valid then return end". It appears this does not properly handle the possibility of belt being nil. Adding a line before the problematic line that simply reads "if belt == nil then return end" allows trees to be mined again.
