Because of the errors I told you before: Mob ID range 3000 to 4000 are reserved to clone sprites, so you can either use an available ID or change the MAX_MOB_ID definition I said before.
Just in case you changed MAX_MOB_ID and don't see anything changed: have you recompiled? Remember that each and every change made on the source code (inside src/) requires recompilation for working. In case you plan to never change your source code, you could even remove the src folder without any problem because they aren't required for the server to work, but to compile or recompile it.
Just in case you changed MAX_MOB_ID and don't see anything changed: have you recompiled? Remember that each and every change made on the source code (inside src/) requires recompilation for working. In case you plan to never change your source code, you could even remove the src folder without any problem because they aren't required for the server to work, but to compile or recompile it.