Bug 1
Bio.php
Line 209
return "##hightlight##QL " . $ql . "##end## " . $this -> bot -> make_item($lowid, $highid, $ql, $type) . " " . $purpose;
you spelt highlight wrong
Bug 2
User.php
Line 243
if (preg_match("/^[a-z0-9]+$/i", $name))
well I'm not sure exactly but isn't this suppose to be like this
(taken from older version)
if (empty($name))