Spring RTS Engine

After very carefully reading and rereading numerous tutorials and compilation instructions, my mapmaking has come to a standstill. I am simply incapable of understanding what's wrong and would like the help of a more experienced mapmaker to get this thing up and running.

The Texture and Metal compile correctly, but Height does not. Below is a link to the Height, Metal, and Texture images, ready for compilation. If someone could point out anything immediately obvious, it would be appreciated immensely.

Map Materials

I'd imagine you haven't correctly specified your height range in your compile line, ie

mapconv.exe -i -x 400 -n -100 -m metal.bmp -a height.bmp -t map.bmp -f feature.bmp -o "map.smf"

if you have these set close to each other (ie 101 100) it's basically saying you want the highest point 1 unit higher than the lowest point.