Eric at Hivewire posted this in the Hivewire forum:

 

Hi Everyone. The problem is on our side. Last night we changed a compression setting on our server to try to make it run faster and the setting is corrupting the downloads. That is why it worked for some of you that downloaded it yesterday before the setting change... and for some it does not. We are trying to get things set back the way they were. Our hope is that in a few hours, everyone can just try to re-download it and all will be fine. If its still corrupted after the setting change, we will have to manual add it again to each of your accounts.

*And he just posted another message saying it should be fixed now.