Greetings Mike:I asked Al Wheeler about this for you (he does our scenery). Here's his reply:
========================================
I'm certainly no expert on FSDS; I've only had it for a couple of weeks and I'm pretty low on the learning curve. In the past I've used VOD.
A couple of thoughts though.
Your problem is probably the color depth. You're limited to 256 colors in each texture. The textures have to be square and powers of 2 (256x256, 512x512, 1024x1024). This is all covered in the FSDS help file.
The textures don't need to be in the Airport 2.xx directory. They only have to be in the texture directory for the scenery that you're creating or, and I don't recommend this, in the main FS texture directory. Whichever, this must be the directory that you designate from within FSDS in Texture Assignments (F4). You should see the textures applied to your object in the 3d display of the object in FSDS if the textures are located by FSDS and all is right with the texture but: FS is going to look for the textures for the object you placed in your scenery BGL file in the texture directory of the scenery you add via World, Scenery, etc.... or in the main FS2002/TEXTURE directory. If you used some other directory for the texture when you created the object, FS won't find it because the path is not carried through in the resulting API file that FSDS creates.
I hope this helps.
Al Wheeler
adwheeler@attbi.com
=====================================
Merry Christmas!
Ben