Well a friend and I decided to check this mod out after not playing Freelancer in a good long time, installed, patched, got the mod and FLMM 1.31, installed all that and activated but when I or he launches the game after we esc past the usual promo vids we crash on the Freelancer load screen before the main menu, no errors or anything just BAM! hello desktop.
I deactivated the mod and ran the game, everything went normally, got to the main menu and even started a SP game to make sure, the mod just won't launch at all.
*EDIT*
Actually, now that I remember we were having issues activating the mod on 1.31, so we got the 1.4 beta and it was able to activate then, whenever I at least tried to activate in 1.31 FLMM would stop responding shortly after I clicked to activate.