That account works fine. I get sent to the /forums/ page and all is fine. And, when I click the home page link, I can see the page. Very, very odd!
I then went back and tried the first account, and now it is fine. But, the first two times I logged in using it, I got the problem I described. However, using this first account, I still get a No Permission message when hitting the Home link -
http://marketersspaceforum.com/index.php