Heightmap wont work!

[Wolflover224]

I created a heightmap on Paint Tool SAI, and I converted it to grayscale in gimp. I saved it as a .png, and the width and height are both 513. However, when I type in the name, it crashed Feral Heart. I need to make a map for a group, but I can't because it won't work.
Help?

[LordSuragaha]

Make sure there was no alpha channel. If there was remove it.

[Preach]

I recommend using GIMP.

[Kerriki]

Make sure that when you convert to greyscale, it actually says that it's in a greyscale format at the top of the image. Simply making everything grey won't work

[Wolflover224]

I did actually convert it to grayscale, and I do not know what an alpha channel is.
I just used SAI for some small details since GIMP's zoom tool is hard to control. Everything is now in GIMP, but it still crashes.

[Kerriki]

To remove alpha channel, you go to layers > transparency > remove alpha channel. Hope it works!

[Wolflover224]

it worked, thanks! xD

[Kerriki]

Locking this since the issue appears to be solved c: