Terrain editor bug

When I try and use an operation such as Canyon Fractal(or any operation for that matter) it always gives me a completely flat map. I just redownloaded the HEAD and it still doesn't work. The precompiled demo app works fine, but when ever I do a fresh compile of HEAD it doesn't work at all. All the numbers in the editor are 0 except for the random seed. The only way I can change the 0 is by typing it in, but it still gives me a flat map everytime. Anyone know what's up?