This is killing me I tried your method Icetourque. For practice I used the imperial campaign and made a copy as mod_campaign. I took height_maps.tga using irfanview converted it to a .bmp did a small edit in Libya saved it converted it back to a TGA, then converted into a .hgt file with the script, put it into the folder, loaded the game. It makes a RVM file but is incompatable with the descr_strat.

The file size has always been within 1 kilobyte of the original .hgt file that came with the game. What am I doing wrong here. It's got to be a setting I'm messing up when converting the files.