When trying to get to the Chessex page in the store (from this one), I get asked to log in even if I'm already logged in (as if accessing account information), and then it just keeps redirecting to the post-login page over and over.
I saw the same problem on the page for Purple Duck Games. In that case, I know that they took all of their stuff out of your store, so the "Pathfinder Compatible" page shouldn't even have a link to that company any more.