Issue with Compute Shader

Hey, I'm working on converting some code I have to a compute shader but am getting weird results and am not sure why. the code is *supposed* to create a sphere with some deformation for height but its like the shader is only running for every nth vertices. image?. I've attached the compute shader and the script that calls it (as txt files cause that all you can upload here apparently). I have a feeling the issue is with my lack of understanding of compute shader threads. but who knows [link text][1] [1]: /storage/temp/189230-terrainface.txt