Now - I assume you
a) Have Freelancer Mod Manager 1.2 BETA 9
b) Have deleted all save games and also autosave
c) Installed the SDK or reinstalled FL.
d) Have downloaded and installed ALL three parts correctly
e) have ACTIVATED all three mod parts from A -> C, one after each other.
If you have, then your problem is terminal - ie, you cannot play this mod - cause there is no reason on this earth as to why it won't work. either FLMM might be corrupt, or the download might be corrupt. You can uninstall FLMM and download again from TLR adn try taht as well.
Seriously - if it doesn't work after all that, there is NOTHING we can do for you