DarkHeart Mod

Okay I d/l this one and stuck it in my 'mod' folder. But when I click on act1 (savegame #13), go to the hanger, pick HC and then launch, the game sends me back to my desktop. Wassssup? Sorry if I'm a dumb nut but am I supposed to extract the guts of the 'DarkHeart' mod or just leave it as is inside the 'mods' folder?

Try clicking off all the mod(s), then launch, then come back in, then do a manual save. Re-activate your mod(s), load up your last save. Then see what happens.