Ok that's odd.
Looks like the Apple Forums are munging the URL somewhat.
I definately did not have a space in the URL between the "9yyg" and the "37g". I tested the link I had before posting and it worked fine.
What appears to be happening is altough the http link works fine when you click on it , but the text that appears in the forum does have a space for some reason. If you copy/paste it watch for the space !
Here's a shortened link I just found for it :
http://bitly.com/SBV9Cx+
I've included the "+" so you guys can preview the URL before you click on it to download. The "swcdn.apple.com" mean's it's off Apple's CDN servers so should be safe.