You have to edit the config.yml file located in the "Server/plugins/RaspberryJuice/" directory and set “location: RELATIVE”
to “location: ABSOLUTE”. Then when you try to get the player’s position with
mc.player.getPos() or mc.player.getTilePos(), it will report the correct
location. The same as the one you get when pressing F3.
I am still going through the Adventures In Minecraft book and that is the only issue I have found using my newly built starter kits with the book. I will post any other issues I come across going forward.
Happy Minecraft programming. : -)