... I don't want anything anymore, I'm tired. Sorry for wasting your time.
I'm attaching the text xdb file to the texture I created. I hope you have the text file xdb for the map (the map itself), the dds texture (the image), and the text xdb file for the image in the same folder (attached below). If not, put the texture and the text file in the map folder, as shown in the screenshot. Check the path against the screenshot. Everything should work. Just in case, remove mods and maps from UserMODs and UserCampaigns and Maps.