Single Player Not Working

[Meep129]

So when I try and play the SP, it goes fine (in this case, Baptism of Fire), and it asks me to destroy the armored car (at the very beginning) and when it is destroyed, no conversations take place, and the FoW is not lifted, and I have played this mission several times in the past and it just doesn't work now. I'm on the latest patch and CD code is good. I also have tried doing this with the mod that allows you to play all the missions from the get go but no use.