Hmm... Well, damn it. Uploaded another fix. Just redownload it again. Sorry
About... 3/4ths of the way of making that dungeon I noticed you could do some things out of order so I had to change a couple items around which caused that to happen. Hopefully that'll be the last one you run into because that should be one of the only places that happens in. There are a lot of crude things I did with that dungeon because of limitations and whatnot.
And yeah, that whole ice dungeon, minus the skating rink puzzle, was made in the dungeon generator.