Feral Heart

So, this isn't completely FH related, but I just wanted to know if anyone knew how to fix this problem. Whenever i try to make a map in GIMP, there isn't a choice to save the Grayscale map as a .png . Just wondering if anyone has had this problem before, and knows how to fix it. Or if there is another way to save the file, to where it will load in the FH Map Maker. Thanks :3

So I am having a problem with Feral Heart. Whenever I open it, all the maps have the Default Terrain texture. Including the tittle screen map in the background. Also, whenever I go into map maker and try to change the terrain texture on a map, it won't change and it just stays at the default terrain >.< Even when I have downloaded a map, it too will have the default terrain :/ Just wondering if anyone else is having this problem, and if there is any way to fix it. Thanks :3