Camera prob

When i play my game and when i try to move mouse left and right it seems like camera wont follow it , camera wont move but when i hold left click and move it then it moves horizontal , i tryed to make new scene,new first person controller , delete receant script but nothing can someone help me ??
Heres my MainCamera
http://postimg.org/image/vzdhuw6wf/
And my Players scripts
http://postimg.org/image/end59gdf3/