It's odd. That problem has occurred with a lot of people. For example, it shows up for me, but many of the people who attempt to download it can't reach it.
I don't know... it might be your External IP or something. Sorry I couldn't help.
First try turning your Firewall off. If this works, then we'll just need to make your firewall accep it, if not, let me know, and I'll see what I can do.