So I've made a new map, an item mall map but when I go to that map ingame, all I see is black and some of the models I put in that map. I already put all the models and textures that I used in my "customRO".grf but seems it does not work. Anything I missed? Please help.
Alternatively you may simply check this in-game by typing "/lightmap" this will toggle the lightmap on or off. If your map textures appear after you turn the lightmap off then you will need to add a light source to the map as Olrox stated.