http://bugs.winehq.org/show_bug.cgi?id=11885
--- Comment #10 from Jérôme Gardou jgardou@yahoo.fr 2008-04-07 17:10:36 --- This seems to be fixed with wine 0.9.59. Could someone confirm this?
Since .NET 2.0 work, I reinstalled Supreme Commander from scratch, and updated it (installing dotnet20 ad vcrun2005 with winetricks) to latest version.