I followed the written guide from SplitInfinity and Treasure Trove unlocked when it should do. I read about something that a few items are missing in the PRIMA guide ... but I think that are the errors you mentioned. So I dont know what that game is doing with the people, I got a glitch like you see in my other thread that most likely no one has ever seen before too.
I think cross checking your list with the written guide from Split could maybe help you seeing what you could have missed or if its really another glitch. :/