Be sure to check up upon what WolfQueen said above. If you're still having issues, be sure to follow both Height Map and Terrain Map steps thoroughly.
Creating your Height Map:
▸ When making a new canvas on Photoshop or GIMP, you must make sure the canvas is set to Grayscale.
▸ Your Height Map must be either 513x513 pixels, or 1025x1025 pixels. Either works.
▸ Your first background must be a white/solid background, with no transparency. Otherwise, when loaded, your map maker will crash.
▸ If you create your height map using multiple layers, you must make sure all of your layers are flattened together.
▸ Save your image as a .png format, with no transparency/opacity. (Photoshop = Use 'Save As' to save, GIMP 2 = Use 'Export' to save).
GIMP 2 Example:
(http://i.imgur.com/U07NT51.png)
Photoshop Example:
(http://i.imgur.com/3ciIKXm.png)
Creating your Terrain Mask:
▸ When making a new canvas on Photoshop or GIMP, you must make sure the canvas is set to RGB Colour.
▸ RGB Colours. Red 225, 0, 0 Green 0, 225, 0 Blue 0, 0, 225. Use those colours exactly.
▸ Your Height Map must be either 513x513 pixels, or 1025x1025 pixels. Either works.
▸ Your first background must be a white/solid background, with no transparency. Otherwise, when loaded, your map maker will crash.
▸ If you create your terrain mask using multiple layers, you must make sure all of your layers are flattened together.
▸ Save your image as a .png format, with no transparency/opacity. (Photoshop = Use 'Save As' to save, GIMP 2 = Use 'Export' to save).
GIMP 2 Example:
(http://i.imgur.com/G0vcQf0.png)
Photoshop Example:
(http://i.imgur.com/11wCJa2.png)
If your game crashes when you try to get into the map creator, there's an issue with loading the map creator in general. If there's only an issue with the height map or the texture mask the game will crash if you select it from the map creator toolbar, so that isn't the case.
There should be a "default" folder inside the "terrains" folder with files such as the ones shown here https://i.gyazo.com/c42aac0f7b32e7ac03f983cd9ac95bbc.png . Are you missing this folder or are any of it's files?
I have all of those files you've shown me, it's the map creator in general that's crashing when I click it.
Be sure to check up upon what WolfQueen said above. If you're still having issues, be sure to follow both Height Map and Terrain Map steps thoroughly.
As said above ^
It's not the height/terrain maps, they're all perfectly fine now, I re-made it to be sure and stuff.
When I click the map creator, my game just freezes and crashes.