Sokolov

I have installed 2 different mods for SH4, and wanted to install Environment (i mean just water and sky). So in my environment mod i have Env folder with all files rewriting original and scene.dat/ Shaders (i checked are the same). But i gotv very different picture on second mod. So what can influence on that? I looked that in different environments, there are files from Library folder - materials.dat, particles.dat. platforme.dat, but don't know what they do. May be some else. Anyway there are some file(s) that change the picture. Pls, help, who have any idea.