I've done some digging, and your vmk_nautilus_private.cct file is wrong. There are a bunch of scripts and some filler items in there (including a hammer and sickle poster; I kid you not), but the room background and animations themselves are nowhere to be found. It's not corrupt; it's just an entirely different file than it should be.
If I had a copy of the file, I'd throw it your way, but I unfortunately don't. All I have are a bunch of .cct files which are, for some reason, renamed to a .dir file extension. I think most of them are corrupt, as well, so that's fun.