To clarify, does it work for you to follow the first link I posted to the OOCalculator listing, and then to follow one of the links from that page to another
thread of the OOCalculator?
The screen shot you posted is just of the first page. Getting to the first page isn't the problem. The problem is following the links from that page.
(I'll try on another machine, but...)
Update: I tried from three machines (Win 7, Win XP, Ubuntu) with two different browsers (Firefox 4, Chrome), and the same thing happened from all of them.