It's just about a pagination issue in the Wordpress plugin, Prospress (free download on [login to view URL])
The problem: index page of the "auctions" , it fails to navigates to the 2nd index page. This particular problem actually has been a subject on their support forum, but attracted no response by the developer (common case).
It looks like it's about the pagination of posts in the Wordpress loop. That's my view.
For your reference, I've attached:
-2 screen shots in description of the issue;
-the file in question (i.e. prospress/posts/ [login to view URL]); and
-another screenshot showing the possible problematic codes.
Thanks!