It is possible that Louis played the game in a different order and when you used the saved game you automattically get Louis play.
Just read the walkthrough and you know in which order Louis has played the game, Tomaha first, then Havenand after that Spire.
Read the English walkytrough for Spire and there you find a way to solve that puzzle a little bit quicker, you don't have to loose time.
We didn't know that the saved games worked because they were made in 2004.
Have fun with the game.