There could be several things wrong with the Terrain file itself, not the game. Make sure all of these things are accounted for when making your terrain before loading it in the map maker:
-Image needs to be 513x513
-Grayscale mode (You need a program such as Gimp or Photoshop to put it in grayscale mode)
-One layer (Delete additional layers or flatten the image)
-No alpha channel (Right click the layer and uncheck alpha channel if it's marked)
-.png
There could be several things wrong with the Terrain file itself, not the game. Make sure all of these things are accounted for when making your terrain before loading it in the map maker:
-Image needs to be 513x513
-Grayscale mode (You need a program such as Gimp or Photoshop to put it in grayscale mode)
-One layer (Delete additional layers or flatten the image)
-No alpha channel (Right click the layer and uncheck alpha channel if it's marked)
-.png
Well, all of those things are accounted for. It's in grayscale, it's 513x513, it's only 1 layer, it doesn't have an alpha channel, and it's a .png file.
This is my second time working on a map (my first one was just a test with objects and stuff), and I did everything the same except with the geographical features. I double checked everything to make sure it was ok to be put into the map maker.
Try saving it to the correct folder again and..hmm..consider titling it lustTerrain rather than LustTerrain. I'm not sure if that would be affecting it but it's worth a try.
It seems that other users have also encountered the same problem and found that if they tested the same name (LustTerrain in your case) but with a plain flat terrain, it had no problem. Basically, it could be that your terrain is too detailed and the game can't load it in.
Try saving it to the correct folder again and..hmm..consider titling it lustTerrain rather than LustTerrain. I'm not sure if that would be affecting it but it's worth a try.
It seems that other users have also encountered the same problem and found that if they tested the same name (LustTerrain in your case) but with a plain flat terrain, it had no problem. Basically, it could be that your terrain is too detailed and the game can't load it in.
Ok. I even tried going to change the config file and manually changing the defaultTerrain.png to LustTerrain.png and after loading it, well.... that just does nothing X3 It isn't too different from my first map, which had hills and two gorges, a river and everything (Lion King), just a little more hilly. I'll try it out.