Ahhh, now I see what you mean. On the main site in the update log where Brion lists the new pages as they're put up, and any other major news tid bits, the links for page 26 and previous are failing.
Well, I can see he's removed the bloody Mary side story and 2008 holiday intermission, and looking at the links I can see they point to different page numbers so I suspect that after deleting the Bloody Mary side story, he's probably had to delete all other pages after her's and repost them to get the last page of Chapter 19, pointing to chapter 20 correctly.