Okay, thank you! I almost have it working now, using the beta version! The menu appears and when I click on a chapter it teleports and everything...only if I press the 'back' button or try to exit out, I get the same message;
TypeError
$gameMap.encounterList is not a function or its return value is not iterable.
I've also noticed that the above error changes depending on what plugins are on. Like when VS Battle Core is on, the error becomes;
SyntaxError
Unexpected token u in JSON at position 0
So I'm really not sure what could be going on, but I hope it helps!