I downloaded sc4 version building 638 and performed both updates put out by maxis and installed the Bat... When I look at my version after it still says 638 not 640 but when installing NAM it says u only need 638 for it to work... Well it keeps telling me I have the original version of the game and won't let me install it... Anybody kno what I'm doing wrong here? Thanks in advance!
If you downloaded it, it should actually be the online version (1.1.641).
If you "downloaded" it, but didn't buy it, you won't be able to install the NAM because the installer won't recognize a cracked game.