I installed the/a Superpatch (no idea which version but it's the Wolf's..'s) for PES5 on my WE9 a couple of days ago--it actually seems to work better on WE9 than PES5; WE9 has at least never crashed since installing the patch. It's a little strange, though, as it almost seems to revert WE9 back to PES5, what with all the graphics saying "PES5".
--Edited--
That was my first post?!?! I've been registered for over half a year! Funny...