http://bugs.winehq.org/show_bug.cgi?id=34967
--- Comment #1 from Austin English austinenglish@gmail.com 2013-11-21 12:52:09 CST --- Forgot, for sp1, I'm using: WINEDLLOVERRIDES=ngen.exe,regsvcs.exe,mscorsvw.exe=b
(which is what winetricks does for dotnet20sp1)
I was also able to reproduce with dotnet20 again, with a clean WINEPREFIX.