I'm not sure what is going on, but my tileset is still pink when I try to use it in Lönn.
The tileset png is in: C:\Program Files (x86)\Steam\steamapps\common\Celeste\Mods\SwitchFactory\Graphics\Atlases\Gameplay\tilesets\Malth\SwitchFactory
My ForegroundTiles.xml is in: C:\Program Files (x86)\Steam\steamapps\common\Celeste\Mods\SwitchFactory\Graphics\Malth\SwitchFactory
The map is in: C:\Program Files (x86)\Steam\steamapps\common\Celeste\Mods\SwitchFactory\Maps\Malth\SwitchFactory.
I don't think I changed the size so that it doesn't match the template (184x104? That is what my tileset png is and I think that matches).
The xml file should be attatched to this post for viewing. If any more attatchments are needed please let me know. Any help is greatly appreciated :)