Ok look for this code
Code:
$result2 = sql_query("select to_userid from ".$prefix."_priv_msgs where to_userid='$userinfo[uid]'", $dbi);
And change it with:
Code:
$result2 = sql_query("select privmsgs_to_userid from $prefix"._bbprivmsgs." where privmsgs_to_userid='$userinfo[uid]' and privmsgs_type='5'", $dbi);
Some people like to use (privmsgs_type='5' or privmsgs_type='1'), but in my experience privmsgs_type='5' is enough