In almost all my maps the biggest complaint is the textures, so i tried to make a ground bitmap for my map Tributaries (after unsuccesfuly transferring it to halo 2 vista) Anyway I followed kirk's tutorial but tool came up with this error when I tried to compile it:

'unsuppoerted TIFF orientation'

He did warn that tool wouldn't accept the tiff if it wasn't uncompressed, but that's how I saved it.