"This file is a regular Map16 file, without tileset specific data. It is not intended to be used for am complete game Map16 import." Message. Help!!
You're pressing the wrong button in the Map16 Editor. this button imports a whole rom's dumped Map16, with all pages and tileset specific data etc. The button you want to press is this one: . This button imports a regular Map16 file, which is just a bunch of tiles that someone (in this case, the submission author) selected to export.