http://bugs.winehq.org/show_bug.cgi?id=26488
--- Comment #4 from mario.colorado@gmail.com 2011-03-20 14:26:15 CDT --- (In reply to comment #3)
Try doing
cd $HOME rm -rf ~/.wine wget winetricks.org/winetricks sh winetricks dotnet20
before installing the app, maybe.
But according to http://appdb.winehq.org/objectManager.php?sClass=application&iId=8626 the app doesn't run well in wine, so you're probably out of luck.
Yeah, I ran the dotnet20 install with winetricks just after installing wine / running winecfg. the dotnet20 installs successfully, right after that I ran the EOS Utility install and got the errors previously described.