pmaidhof said:
I messed with it a little bit. First, your map is not big enough to come anywhere near DA's map area limitation, so that is certainliy not the problem.
After doing some experiments, your terrain file seems to be corrupted. I tried to fix it but it seems to have locked out a large segment of the map for no apparent reason. Did you, by chance, alter the map scale
after you completed the terrain file? That is my best guess of what is wrong here. If so, you
can't do that. You need to set the scale using the drag and drop distance calculator, then code the terrain. If you make changes to map distance, you will need to start from scratch again and create a whole new terrain file.
Using the same map, I was able to easily start from scratch and start building a new terrain file with no problems. There is nothing wrong with the "map" itself, this is just an image.
I suggest you re-measure your distance using the drag and drop, then create a brand new terrain file. Incidentally, you seem to be using overly restrictive terrain for much of the map. The "hilly" region that on the Saudi border that you currently have coded as Red (severely restricted) is not really that rugged. The shading on that map is mostly there to show the gradual change in elevation more than anything else. While there are rugged areas, rocky outcrops, and wadis in the region, most of it is relatively flat an passable for groun units.