http://bugs.winehq.org/show_bug.cgi?id=10019
--- Comment #12 from Nikolay Sivov bunglehead@gmail.com 2009-12-29 15:03:40 --- (In reply to comment #11)
Yup, installing dotnet20 with winetricks makes the installer work first time with a clean WINEPREFIX.
What do you mean saying first time? Subsequent installer launch fails or what? Does application install after installing dotnet20 with winetricks?