Issues after upgrading openpublish_core and openpublish_theme

My site (www.stattler.com) uses OP 1.6 and recently I've updated the openpublish_core module and openpublish_core theme. After doing it, I see that the author profiles are not showing up in any node (Article or Blogs). On the frontpage, Authors for Blogs are showing, though.

Now, before I remove these recent updates and get back to the older once
(a) I would like to know whether the issue is at all related to the updates or not
(b) if yes, which one should I remove? the theme or the module?

Thanks a lot!