Maximum size to the map?

[Myrddraal]

Hm, I'll try some more tests to see if its a format error...

[Myrddraal]

OK, I now try taking the same map, and reduced it back to normal size, editing descr_terrain.txt appropriately. The map works.... I don't get it, I must have made a mistake first time around. Time to try again...

[blindfaithnogod]

in the descr_terrain.txt in your campaign maps folder you will see a place where it says dimensions. you will need to edit this as you change map sizes