Needed help in starting game

Heey,

Im the host of the game if we have enough players the game will start then if the game's loaded it says awaiting Challenge 1,2,3,4,5,6,7,8,9,10 ect.
But if all people away onyl my then the game start Why?
hwo i can fix

Internet is good Nat open

okay now your having problems with joining a game with players before or after?
sorry your English is hard to understand :/

No, what he is trying to say that is if he loads a mod (as host) with some people, it gets stuck on Awaiting Challenge however, it works fine when he loads the mod alone.