SirSteve
If I remember rightly there's two VERY similar lines in functions.php, one has a . (dot), one doesn't. You're editing the line without a dot. So it's trying to call the script in an area it can't. You have to edit the EXACT line the hack readme tells you to.
(from memory) you edited function getpostbit($post, the readme says to edit function .getpostbit($post - notice a dot?