Same here, running Win 7 and after last patch release downloaded now can't run game.
Unhandled Exception Occured: System.File.IO.FileNotFound.
SlimDX reinstalled
Windows not allowing me to reinstall .NET Framework 3.5 stating nothing more than Setup Error.
Never had problems before the release.
What version were you running before the release? And was it working immediately prior to the release?
If .NET 3.5 is saying "setup error," that's a pretty good indicator that there is a problem with .NET. I would suggest using the
full package of .NET 3.5 to try resolving whatever that issue is.
If your prior version was less than AI War 3.0, then most likely the issue is that .NET 2.0 is corrupt or uninstalled on your game. AI War does not normally require .NET 2.0, but that is what it runs on (.NET 2.0 is a part of .NET 3.5). If .NET 2.0 was previously installed, but then was uninstalled, that quite often corrupts the install of .NET until you reinstall .NET 2.0. Yay Microsoft.
In that case the solution would be to reinstall .NET 2.0, because apparently if it was ever there you can't take it off your system without applications that were compiled against .NET 2.0 but otherwise would run against .NET 3.5 (like AI War).
Sorry for the inconvenience, and hope that helps!