got this prob wiht my costum wad, as far as i know there are no mistakes in it.
download it here to see the problem
http://www.xs4all.nl/~dewitnel/peppersplanet/pepper.zip
its 500-600kb and it are 9-12 textures if im rigtht, 2 water 3 metal some window and a failed grass.
you can use em freely because they dont work