Currently active users has gone

[4l3ghi]

I'v this problem with vB 4.1.3! I can't view the user online, and in one skin i've the word "Array".
What is the problem?? :S

--------------- Added [DATE]1304170037[/DATE] at [TIME]1304170037[/TIME] ---------------

The error are in "forum.php"
I replaced the part of "LOGGED IN USERS" with the part of 4.0.7 version.

This is my new code

// ### LOGGED IN USERS #################################################
$activeusers = '';
if (($vbulletin->options['displayloggedin'] == 1 OR $vbulletin->options['displayloggedin'] == 2 OR ($vbulletin->options['displayloggedin'] > 2 AND $vbulletin->userinfo['userid'])) AND !$show['search_engine'])
{
	$datecut = TIMENOW - $vbulletin->options['cookietimeout'];
	$numbervisible = 0;
	$numberregistered = 0;
	$numberguest = 0;

	$hook_query_fields = $hook_query_joins = $hook_query_where = '';
	($hook = vBulletinHook::fetch_hook('forumhome_loggedinuser_query')) ? eval($hook) : false;

	$forumusers = $db->query_read_slave("
		SELECT
			user.username, (user.options & " . $vbulletin->bf_misc_useroptions['invisible'] . ") AS invisible, user.usergroupid, user.lastvisit,
			session.userid, session.inforum, session.lastactivity, session.badlocation,
			IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid, infractiongroupid
			$hook_query_fields
		FROM " . TABLE_PREFIX . "session AS session
		LEFT JOIN " . TABLE_PREFIX . "user AS user ON(user.userid = session.userid)
		$hook_query_joins
		WHERE session.lastactivity > $datecut
			$hook_query_where
		" . iif($vbulletin->options['displayloggedin'] == 1 OR $vbulletin->options['displayloggedin'] == 3, "ORDER BY username ASC") . "
	");

	if ($vbulletin->userinfo['userid'])
	{
		// fakes the user being online for an initial page view of index.php
		$vbulletin->userinfo['joingroupid'] = iif($vbulletin->userinfo['displaygroupid'], $vbulletin->userinfo['displaygroupid'], $vbulletin->userinfo['usergroupid']);
		$userinfos = array
		(
			$vbulletin->userinfo['userid'] => array
			(
				'userid'            =>& $vbulletin->userinfo['userid'],
				'username'          =>& $vbulletin->userinfo['username'],
				'invisible'         =>& $vbulletin->userinfo['invisible'],
				'inforum'           => 0,
				'lastactivity'      => TIMENOW,
				'lastvisit'         =>& $vbulletin->userinfo['lastvisit'],
				'usergroupid'       =>& $vbulletin->userinfo['usergroupid'],
				'displaygroupid'    =>& $vbulletin->userinfo['displaygroupid'],
				'infractiongroupid' =>& $vbulletin->userinfo['infractiongroupid'],
			)
		);
	}
	else
	{
		$userinfos = array();
	}
	$inforum = array();

	while ($loggedin = $db->fetch_array($forumusers))
	{
		$userid = $loggedin['userid'];
		if (!$userid)
		{	// Guest
			$numberguest++;
			if (!isset($inforum["$loggedin[inforum]"]))
			{
				$inforum["$loggedin[inforum]"] = 0;
			}
			if (!$loggedin['badlocation'])
			{
				$inforum["$loggedin[inforum]"]++;
			}
		}
		else if (empty($userinfos["$userid"]) OR ($userinfos["$userid"]['lastactivity'] < $loggedin['lastactivity']))
		{
			$userinfos["$userid"] = $loggedin;
		}
	}

	if (!$vbulletin->userinfo['userid'] AND $numberguest == 0)
	{
		$numberguest++;
	}

	$skipgroups = array(3,4);
	foreach ($userinfos AS $userid => $loggedin)
	{
		if (in_array($loggedin['usergroupid'], $skipgroups))
		{
			$numberguest++;
		}
		else
		{
			$numberregistered++;
			if ($userid != $vbulletin->userinfo['userid'] AND !$loggedin['badlocation'])
			{
				if (!isset($inforum["$loggedin[inforum]"]))
				{
					$inforum["$loggedin[inforum]"] = 0;
				}
				$inforum["$loggedin[inforum]"]++;
			}
			fetch_musername($loggedin);

			($hook = vBulletinHook::fetch_hook('forumhome_loggedinuser')) ? eval($hook) : false;

			if (fetch_online_status($loggedin))
			{
				$numbervisible++;
				$show['comma_leader'] = ($activeusers != '');
				$templater = vB_Template::create('forumhome_loggedinuser');
					$templater->register('loggedin', $loggedin);
				$activeusers .= $templater->render();
			}
		}
	}

	// memory saving
	unset($userinfos, $loggedin);

	$db->free_result($forumusers);

	$totalonline = $numberregistered + $numberguest;
	$numberinvisible = $numberregistered - $numbervisible;

The user online, now, is in on