[class101]

Yep must be around this part just up look at the SQL query from Zoints index.php

			$_threads = $db->query_read("
				SELECT * FROM " . TABLE_PREFIX . "thread
				WHERE forumid IN(" . implode(',', $visible) . ")
					AND threadid IN(" . implode(',', $threadids) . ")
				ORDER BY $orderby $direction
				LIMIT $limitlower, $pp
			");

the one made by forumdisplay.php catchs much datas

	$threads = $db->query_read_slave("
		SELECT $votequery $previewfield
			thread.threadid, thread.title AS threadtitle, thread.forumid, pollid, open, replycount, postusername, postuserid, thread.iconid AS threadiconid,
			$lastpost_info2, thread.dateline, IF(views<=replycount, replycount+1, views) AS views, notes, thread.visible, sticky, votetotal, thread.attach,
			hiddencount, deletedcount
			" . (($vbulletin->options['threadsubscribed'] AND $vbulletin->userinfo['userid']) ? ", NOT ISNULL(subscribethread.subscribethreadid) AS issubscribed" : "") . "
			" . ($deljoin ? ", deletionlog.userid AS del_userid, deletionlog.username AS del_username, deletionlog.reason AS del_reason" : "") . "
			" . (($vbulletin->options['threadmarking'] AND $vbulletin->userinfo['userid']) ? ", threadread.readtime AS threadread" : "") . "
			" . ($redirectjoin ? ", threadredirect.expires" : "") . "
			$hook_query_fields
		FROM " . TABLE_PREFIX . "thread AS thread
			$deljoin
			" . (($vbulletin->options['threadsubscribed'] AND $vbulletin->userinfo['userid']) ?  " LEFT JOIN " . TABLE_PREFIX . "subscribethread AS subscribethread ON(subscribethread.threadid = thread.threadid AND subscribethread.userid = " . $vbulletin->userinfo['userid'] . " AND canview = 1)" : "") . "
			" . (($vbulletin->options['threadmarking'] AND $vbulletin->userinfo['userid']) ? " LEFT JOIN " . TABLE_PREFIX . "threadread AS threadread ON (threadread.threadid = thread.threadid AND threadread.userid = " . $vbulletin->userinfo['userid'] . ")" : "") . "
			$previewjoin
			$tachyjoin
			$redirectjoin
			$hook_query_joins
		WHERE thread.threadid IN (0$ids) $hook_query_where
		ORDER BY sticky DESC, $sqlsortfield $sqlsortorder
	");

this is just supositions because I dunno really at coding but it looks like the zoints query doesn't retrieve what we do need the threadid. In function_forumdisplay.php included in the zoints index.php you see:

			if ($thread['threadiconid'])
			{
				$thread['threadiconpath'] = $vbulletin->iconcache["$thread[threadiconid]"]['iconpath'];
				$thread['threadicontitle'] = $vbulletin->iconcache["$thread[threadiconid]"]['title'];
			}

			// show poll icon
			if ($thread['pollid'] != 0)
			{
				$show['threadicon'] = true;
				$thread['threadiconpath'] = "$stylevar[imgdir_misc]/poll_posticon.gif";
				$thread['threadicontitle'] = $vbphrase['poll'];
			}
			// show specified icon
			else if ($thread['threadiconpath'])
			{
				$show['threadicon'] = true;
			}
			// show default icon
			else if (!empty($vbulletin->options['showdeficon']))
			{
				$show['threadicon'] = true;
				$thread['threadiconpath'] = $vbulletin->options['showdeficon'];
				$thread['threadicontitle'] = '';
			}

if ($thread['threadiconid']) is not defined I think and we land in the default post icon else if (!empty($vbulletin->options['showdeficon']))