Fails to create Image

[The Devourer]

Hi, i've been working on making my own camaign map for a provincial campaign(i say make, im using the guide to cut out a smaller part of the main campaign map).
I've pretty much finished everything i can see, all the maps seem complete and in the correct scales, the text folders shouldn't be conflicting anything; but when I try to play the map i get a KTM, which i was expecting, as stated in the guide I needed to do this to get a corrected_regions.tga. But the problem is when I exit instead of getting some desc_strat based error message I get told "Failed to create image from file 'data/world/maps/campaign/Holy_land/desc_terrain.txt'. Just so you know this still gives me a map.rwm and a corrected_regions, but the corrected regions is just blue all over with none of my regions on it.
So I have obviously made a mistake somewhere but going through all the guides on map making I can find and spending a great deal of time fiddling with files involved and I still have no idea why the game is rejecting my maps. I don't know if this would be important but I'm running this as a -mod in BI.exe. Anyone have an idea what could be causing the problem?
Thanks