If you're able to post here, you should be in. I don't think there is a post requirement to download, but you might be having problems with the cookie. Log in, make sure you mark the "Remember Me" box, and confirm that you are not running anything that will block a cookie.
And if it's still a problem, try refreshing the page after you have logged in.
(And yes, I am posting at 1:30 AM when I should be asleep. If this is incoherent, that's why.)