Some have the problem that with mods applied the game won't launch, but without mods applied, the manager launches the game. I found out, that i had my Star Wars Battlefront game.exe starting in compatibility mode for another windows. I run windows 10. I switched off the compatibility mode by rightclick on the exe file, compatibility, deselect, apply. Voila, mod manager launches the game, with ALL MODS WORKING :-q.