Alright, I eventually found out how to get to the Secret Cameras, and beat Night 6. I don't mean to be mean, but I need to really encourage Night 6 get a lot of bug fixes. Aside from the ridiculous power drain for the only night that actually requires frequent camera usage, I encountered several bugs - Cameras not letting me change, the obvious cam 12 thing, the ending sequence had The Entity appear on one of my doors, and in my panic I somehow opened the cams but was unable to close them, and these are just the ones off the top of my head.