On the Lerpz tutorial i was trying to get the camera to go to third person following the character. So i tried to add the SpringFollowCamera to my NearCamera like it said in the tutorial pdf and for some reason it's not going to the hierarchy. I've tested around and it seems like the only thing that don't go to the hierarchy are the scripts for the cameras.
Are you trying to add the script to the camera? When you add it you need to drag it into the small space just below the last component. If you try to drag it "on to" an area in the inspector that is taken up by an existing script it won't let you drop it.
did you add lerpz as the target of the script by dragging the player object into the script?