The full mod is about 6.5 gb big. I estimate that a package of textures would be about 5 gb big. It does not really make sense put all the different ways textures are stored into such a package. It is not even possible to simply tell which textures belong to which 3d object.
thats very strange the texture apparently is there... it is not shader related... the texture is not different than all the other ones in the game (just checked it). Can we do a teamviewer seassion so I can take a closer look on the settings and files?