http://bugs.winehq.org/show_bug.cgi?id=16956
--- Comment #47 from Dan Kegel dank@kegel.com 2011-07-04 05:01:28 CDT --- Sounds like the dependency chain shouldn't be skipping service packs.
For starters, I can fix dotnet20sp2, and then make dotnet30 depend on dotnet20sp2.