just downloaded it, nothing wrong with the .wad file
you hae to go into your wed texture manager.
remove the wad, then add it from the folder you extracted the zip file into
I would re align the thatch texture on the roof as well as move the sprite thatch overhangs so they extend off the top surface of teh roof.
Might want to make a a new texture for the roof thatch from your sprite so they match better. just duplicate it several times and stack them in layers just as if you built the thatch.
(just realigned the texture of the roof above the door side then moved the thatch trim)