http://bugs.winehq.org/show_bug.cgi?id=33880
--- Comment #1 from charles.goodwin@gmail.com 2013-06-24 20:53:18 CDT --- Confirmed to work in 1.6rc2; regression is in 1.6rc3 specifically.
Error consistently occurs. Just need to download NSFW and install/run it to get the error.