Why is my y-axis locked?

Questions & Answers
1

I am using the Standard Assets FPSController and my y-axis seems to be locked, so I can look around, but not look up and down.

2

@Uni010 No I have not altered the script or anything like that, when I exited the project (saved) and went back into it later it was like that.

3

Make sure that camera in FPSController is the only one that have MainCamera tag on itself.