Hey! Umm, I noticed this bug days ago; I can't make maps either, when I open the map maker and I attempt to change the terrain name, it crashes. It seems it only works the terrain with "defaultTerrain.png", because when I change the terrain for a one I made for example "pridelandsTerrain.png" the game crashes. I tried to reinstall the game, install the game on others computers I have to see if it's a computer render problem but anything works.
Also, to see whats the problem, I replaced "defaultTerrain.png" for a terrain I've made and it doesn't work anyway.
Maybe it's the location where I keep my custom terrains, I keep them in the "terrains" folder (it seems to be logical, but anyways if I'm wrong maybe it's that -_-)
If someone can help me I'll appreciate so much <//3