You missed a couple of changes to "anvil.setting.item_displacement", at init.lua lines 290 and 328:
2017-06-18 13:49:49: ERROR[Main]: ServerError: AsyncErr: ServerThread::run Lua: Runtime error from mod 'anvil' in callback LuaLBM::trigger(): ...ival_World/worldmods/dreambuilder_modpack/anvil/init.lua:328: attempt to perform arithmetic on global 'anvil_item_displacement' (a nil value)
2017-06-18 13:49:49: ERROR[Main]: stack traceback:
2017-06-18 13:49:49: ERROR[Main]: ...ival_World/worldmods/dreambuilder_modpack/anvil/init.lua:328: in function 'func'
2017-06-18 13:49:49: ERROR[Main]: /usr/share/minetest/builtin/profiler/instrumentation.lua:106: in function </usr/share/minetest/builtin/profiler/instrumentation.lua:100>
You missed a couple of changes to "anvil.setting.item_displacement", at init.lua lines 290 and 328: