Could you go in and validate that the value for the "CHARSET" key in "languages/english/genaric.php" is "UTF-8" (by default it is "iso-8859-1")
I am using self-translated Chinese file.
In languages/zh_tw_utf8/generic.php :
$ubbt_lang['CHARSET'] = "utf8";
It doesn't work.
After changed to UTF-8 , still doesn't work.