a | is a character which is regarded to be dynamic i think.
on vb.org we don't allow dynamic urls
one of the working links here has | so it can't be that one, it might be * and @ but it is still not working no matter if I allow dynamic url on our board.
Thanks for your efforts trying to help but I think it is in the reghex in functions_bbcodeparse.php.. cause it sounds unlikeley the allow dynamic url option is put in just for the show right.