When I put in terrain height maps, the game crashes?

[Ivyleaf1212]

Hey, so, I was making a map, right? Well, I finally get a good Height Map, and so I decide to put it in. It's named "fourtreeslterrain.png" without the quotations. The l is not a typo, that is the actual name. Anyways, first I spelled it wrong so it just said it couldn't find it. I went back and put it in, then clicked another tab to load it. Immediately it said "FeralHeart.exe has stopped working." Thinking it was just being slow, I left the tab and came back, and it still was not responding and forced me to close it. So I tried again. Same results. I closed all my tabs down. Same results. Help? I really want to make this map, for a role-play I'm setting up.

[Ramine]

Make sure your height map is:
513x513 or 512x512
In greyscale.

[Ivyleaf1212]

It's 513 x 513 in grayscale. It's png. So...?

[Ramine]

Hm, maybe try changing it's name? That might help.

[Ivyleaf1212]

I took away the l so it would match... Although I just realized, I tried making a map without the tutorial first but failed, and I'm using the world in which I edited.
Do I need to make a blank world to put it in correctly?

[Ramine]

I'm not sure, you should try that.

[Ivyleaf1212]

I did... I'm really confused now. The game works so I don't think it's antivirus or something and nothing else is wrong with my computer at the moment. Is it a problem with my computer or the game, do you think?

[Jayfeather55]

If you could upload the terrain heightmap on photobucket or something and then post the link, I could see if anything is wrong with it C:

[Ivyleaf1212]

Okay, I will. BTW Now its crashing in general. Ugh. And I was in the middle of talking to a friend -.-

[Ivyleaf1212]

http://www.mediafire.com/?c1r4h13jc99j7p8
im going to restart my comp now.