OK, I found the problem. Your conf.ini caused the same problem in my IL-2 and when I changed TexLandQual=3 to your TexLandQual=2 I also get the same issue with my conf.ini. After changing TexLandQual=2 to TexLandQual=3 in your conf.ini Berlin map loads OK, so you can try that. You were just using lower resolution ground textures since your TexLandQual=2 seems to make IL-2 ignore those higher resolution .tgb textures.
Other option to fix this issue is to remane all those five WoodX.tgb textures to WoodX.tga and keep TexLandQual=2 in conf.ini (or add copies downscaled to 512x512 with .tga type). However, it is actually better to remove this mod if you really have some good reason to use lower resolution textures. If you don't have any reason to use lower resolution textures and you get good enough FPS with these textures, then you can just change that conf.ini setting to TexLandQual=3 permanently.
I'm sorry that this mod has this small bug with .tgb textures that don't have their lower resolution .tga versions. I just didn't know which settings neglect those .tgb textures and I expected that everyone interested in high resolution textures would use game settings that allow them. After all, this mod is not meant for those who can't use high resolution textures or don't want to use them. Now we know that TexLandQual=2 forces IL-2 to load .tga ground textures instead of .tgb ones and thus there should be a lower resolution .tga version and higher resolution .tgb version of every ground texture. However, most map mods don't have those two versions and thus always use high resolution textures (or don't load with TexLandQual=2 in case of only .tgb textures). Actually, I could change all textures to .tgb in my high resolution texture mod to get this effect for some mod maps in UP3/DBW, but that is not needed since those who want lower texture resolution shouldn't download and install that mod anyway.