[BirdOPrey5]

Originally Posted by Montecristo

The problem are the titles of the post. If you have ??????. not work.

your post appears showthread.php?t=54254

my post showthread?t=54254-this-is-the-name-my-p?st <---the accent no works

Yes you are correct... when I repeated the test on a 4.0 test board I get the error "'url' parameter does not contain a valid URL" I notice if you erase the text and keep the number the link still works, for example:
http://www.testdomain/test/showthread.php/16-accent-test-%C3%B3%C3%AD%C3%A9%C3%BA%C3%A1

goes to the same place as simply:
http://www.testdomain/test/showthread.php/16

I will see if there's a way to use the simplified URL as the URL parameter