Feral Heart

I had this same problem too. If you have any like say... You have a medium grey color, then put a white shape fully filled there with no gradual decline of color. Try replacing the white with a less whiter color.
I did this and it started working again. c: Make sure to keep a backup of your origional heightmap though!

Yay! Thanks so much!  You really made my day. (:

I've had this problem before, and when I asked for help on it, here's what I was told to do:

Open up the heightmap
click Save As, s ave it as a .jpeg image
Click save as, save it as a .png again
Say yes to write it over if it asks if you want to replace it if there's already a .png of that image in your folder
Go in game, type in your heightmap, make sure that it ends in .png
It should work if you do that. If not, I dunno what to tell you; It worked for me.
Hope this helped!

Thanks so much, but it didn't work, even when I tried it again.  Do you think you or anyone else can get on join.me to walk me through it again just in case if I missed something?

Hmm...read over it, but nothing ):  Anybody else?

Whenever I try to put a height map in a map that I am working on, it freezes and makes me close FH and restart it.  Terrain maps work fine, but height maps have never worked.   Yes, I did follow the official manual and I saved it as a png.  I worked on it with my friend over the phone, and hers worked but mine did not.  I've also tried making a new Heightmap, but it still won't work.  Any help would be appreciated. 

Please no stupid comments like, "Have you restarted your computer?" or "Have you looked over the Manual again?"  I wouldn't be posting this if I hadn't.
Thanks in advance!

Go into the FH+ folder and drag the 'application' icon to your desktop~

There is no Fh+ folder....though when I first downloaded FH+ it requested to make a new folder