In my act 1 of Frozen Wasteland Zone, after making a few modifications to other areas of the level there is a singular linedef with textures on all parts (I mean Upper, Lower and Middle on BOTH sides) that in game gives off an incredibly large HOM. What am I to do? The link is below.
http://www.sendspace.com/file/w1atpx
http://www.sendspace.com/file/w1atpx