I have JP on PS3 and I'm on Chapter 3 on the part where the steam is leaking. The next chapter is going to the power plant. I get to the end of that chapter and the game sends me back to the main menu. when i select chapters theres 2 chapters left and still locked. Did I do something wrong not being able to get to the next chapter? I don't want to start chapter 4 without going to the power station.