It's taken a while to come accross another dungeonmaster since adding your tnt mod and enabling it, but I finally did, and unfortunately it crashed again. Error message below.
AsyncErr: ServerThread::run Lua: Runtime error from mod 'mobs_monster' in callback luaentity_Step(): Unknown node: tnt:tnt
stack traceback:
[C]: in function 'get_content_id'
C:\games\minetest-5.3.0-win64\bin\..\mods\tnt\init.lua:306: in function 'tnt_explode'
C:\games\minetest-5.3.0-win64\bin\..\mods\tnt\init.lua:418: in function 'boom'
C:\games\minetest-5.3.0-win64\bin\..\mods\mobs/api.lua:4134: in function 'boom'
...-5.3.0-win64\bin\..\mods\mobs_monster/dungeon_master.lua:139: in function 'hit_node'
C:\games\minetest-5.3.0-win64\bin\..\mods\mobs/api.lua:4038: in function <C:\games\minetest-5.3.0-win64\bin\..\mods\mobs/api.lua:4004>
do you have any ideas on what to look for to fix it?