The shaderscript is correct, you must rename nem_dust_lt.tga to nem_dust_lf.tga Its not following same name pattern as for the right side..
I first though something is wrong with the tga, but I couldnt find anything special, so I made a small testmap, and it did not appear either (well in ET).. So I inspected filenames
now everything works fine now i just have to play arround with terragen and terragen 2, and i will bring out some days a skyboxpack, cause, be true: you know everyskybox in the q3skypack, too
for a big tree, you need a small axe. --Bob Marley--