sandworm randomly crashes the server
2016-05-09 17:40:59: ERROR[Main]: ServerError: Runtime error from mod '*builtin*' in callback environment_Step(): ...orld/worldmods/mobs_more_monsters/mobs_sandworm/init.lua:101: attempt to index local 'physics' (a nil value)
2016-05-09 17:40:59: ERROR[Main]: ...orld/worldmods/mobs_more_monsters/mobs_sandworm/init.lua:101: in function 'func'