[Leonard]

Hey guys,

So I had the same problem as some of you where, if you use attachments, only the first thread shows up on forumdisplay and all the other threads mysteriously disappear.

After a bit of digging the culprit was actually in a missing "group by" clause in the SQL statement.

Solution
Edit the plugin "Forum Display - Query"

Change the code to this:

$dothumbnail = false;
if((THIS_SCRIPT == 'forumdisplay') && ($vbulletin->options['thread_thumbnails_active'] == '1')){
	if ($vbulletin->options['thread_thumbnails_forum_list'] && $vbulletin->options['thread_thumbnails_forum_list'] != "") {
		$forumsallowed = explode(",", $vbulletin->options['thread_thumbnails_forum_list']);
		if (in_array($foruminfo['forumid'], $forumsallowed)){ 
			$dothumbnail = true;
			if($vbulletin->options['thread_thumbnails_thumbnail_source'] == '1'){
				$hook_query_joins .= "LEFT JOIN " . TABLE_PREFIX . "attachment AS attachment ON (attachment.postid = thread.firstpostid AND attachment.extension IN('jpg', 'gif', 'png', 'jpeg', 'bmp'))";
				$hook_query_fields .= ", MIN(attachment.attachmentid) AS attachmentid";
				$hook_query_where .= "GROUP BY thread.threadid";

			} else {
				$hook_query_fields .= ", thread.thumbnailurl AS thumbnailurl";
			}
		}
	}
}

The missing line was

$hook_query_where .= "GROUP BY thread.threadid";

Working now....

Leo