Alright, you could grab the newest version from here then:
http://www.x264.nl/Also added to the first post, thanks for the heads-up.
EDIT: Aaah bugger... the rest of the files aren't included, i'll do a quick look-around.
EDIT: Found them, updated the x264.exe and changed the x264 settings to the same as those i'm using in the mkv tutorial so the quality should be just as good, they're added to the first post now.