http://bugs.winehq.org/show_bug.cgi?id=31980
--- Comment #3 from maximilien bonnassem@hotmail.com 2012-10-15 12:39:06 CDT --- Edit to original bug : console output during custom game creation. I just attached the output of the normal game champ selection (which was not tested, but some other errors appear...)
I will test again both stuff with wine 1.5.14 (because I did not have any problems until wine's last update to 1.5.15).