Well, I got it to not spawn across the map. However, 1) Buildings are still not showing up at all when I build it in my custom district. 2) I can now place the buildings with FireTuner on the map, and it shows up fine.
So now I am trying to figure out how my buildings show up fine when placed by FireTuner, but won't show up in my custom district when I build it. Because if you can place your asset in game with FireTuner, that means your geometries, textures, materials, assets, xlp, and mod.art are all good. So it should be something with my Landmarks.artdef right? But I have looked over it a millions times and compared it to sukritact's one, and still can't find a problem. The only thing I am doing that is different than normal, is I set it up where you get 3 different building choices for each level. I don't see that causing any art issues, though I thought I would mention it anyways. So now that I have narrowed it down some, anyone know what may be wrong?