You can find the right texture folder if you check the texture.cfg file. It probably uses some generic texture path
fallback.3=…\texture\DetailMap
fallback.4=…\texture\Glass
So the glasss texture is either in DetailMap or the Glass folder. It might be the CANOPY_SCRATCHES_COMP.TIF.DDS Texture in the DetailMap folder. Just try to change the Canopy_Scratches_comp.tif texture and replace the .dds file (make a backup of course 
)