error after upgrading to 1.2.14

[incadude]

Code:

Fatal error: Call to a member function on a non-object in /homepages/18/d241666310/htdocs/US/inc/functions_forumlist.php on line 186

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please how can i resolve this.

Code:

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// Format lastpost date and time $lastpost_date = my_date($mybb->settings['dateformat'], $lastpost_data['lastpost']); $lastpost_time = my_date($mybb->settings['timeformat'], $lastpost_data['lastpost']); // Set up the last poster, last post thread id, last post subject and format appropriately $lastpost_profilelink = build_profile_link($lastpost_data['lastposter'], $lastpost_data['lastposteruid']); $lastposttid = $lastpost_data['lastposttid']; $lastpost_subject = $full_lastpost_subject = $parser->parse_badwords($lastpost_data['lastpostsubject']); if(my_strlen($lastpost_subject) > 25) { $lastpost_subject = my_substr($lastpost_subject, 0, 25) . "..."; } $lastpost_subject = htmlspecialchars_uni($lastpost_subject); $full_lastpost_subject = htmlspecialchars_uni($full_lastpost_subject); // Call lastpost template eval("\$lastpost = \"".$templates->get("forumbit_depth$depth$forumcat"."_lastpost")."\";");

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forgot to give a link:
http://unreal-station.com/forum.php