line 372 in /incfiles/classes/functions.php
$out .= '<div><span class="gray">' . self::$lng['browser'] . ':</span> ' . htmlspecialchars($user['browser']) . '</div>' .
'<div><span class="gray">' . self::$lng['ip_address'] . ':</span> ';change to
$out .= '<div><span class="gray">' . self::$lng['ip_address'] . ':</span> ';