(SOLVED) Height map crashes game

[Mogege]

I made the terrain in sai, all in greyscale (not greyscale mode, no option.) at 200x200. After I noticed my error I resized both the terrain and the mask to 513x513. The mask works completely fine.
I installed GIMP and converted it to greyscale mode. Saved it, overwrite the file, opened FH and still crashes.
The game freezes for about 3 seconds then closes itself; no error or anything.
I have no idea what I'm doing wrong

[Notorious.]

Hello! I have a couple of suggestions you can give a shot at that might work.

- Make sure you're only using one layer for your height map.
- Try changing your rendering system.
- Save it as a .png file if you haven't already.
- If you have Alpha Channel on, turn it off. To do so, go to Layers > Transparency.

[Mogege]

Hello! I have a couple of suggestions you can give a shot at that might work.

- Make sure you're only using one layer for your height map.
- Try changing your rendering system.
- Save it as a .png file if you haven't already.
- If you have Alpha Channel on, turn it off. To do so, go to Layers > Transparency.

Thank you ! one of these worked, I'm not sure which but it was extra layer or alpha channel. Good to know for the future ^^

(this can be locked or deleted btw)

[Notorious.]

Glad to hear you got it working! Have fun with your map.

[Kynvuu]

Locking this as the issue has been solved c;