Crossfire randomly closes on me.

Alot of times when i am playing a game at the very end when it says "Mission success" or

"Mission failed" the game just randomly closes on me.I have ehard that getting gamebooster

has helped some people,but i use gamebooster and this still happens.I have also hear that if

you press the your mouse it exits,but even when i don't press anything it still exits.This is

becoming a major annoyance.Does anyone know how to fix it?Help would be greatly

appreciated.