[Malinko]

Yes, what Sulukra said is the common problem.

1) Make sure there are no "setmap" commands to set the map, as in, with the image and text file.
2) Make sure there are no server options set for, "bigmap" and "minimap" because this acts as setmap as well.
3) Make sure there is a some sort of NPC which loads the map, with, "loadmap gmap;" with no file extension of, ".gmap."