If immediately after launching C&C4 Tiberian Twilight, before the login screen appears, you receive a lengthy error message beginning with "Unhandled Exception:..." please follow the steps below:
Try updating Microsoft .Net Framework to either 3.5 or 4.
These can be downloaded through the following links:
-
.Net Framework 4:
http://www.microsoft.com/downloads/en/details.aspx?familyid=9cfb2d51-5ff4-4491-b0e5-b386f32c0992&displaylang=en -
If this fails to install, try .Net Framework 3.5:
http://www.microsoft.com/downloads/en/details.aspx?familyid=333325fd-ae52-4e35-b531-508d977d32a6&displaylang=en