At present, maps don't work in worlds other than the main one. This plugin is an extremely simple (and terrible) fix to that problem. There is no way to my knowledge to fix maps automatically, so instead a command is required. Simply hold a broken map and type "/fixmap", and voila, it will be reinitialized to your current world and location.
Features:
Bugs:
Permissions:
Relevant Bukkit bugs:
Hopefully the relevant bug will be fixed and this plugin will become irrelevant. Until then, here ya go.
Development is on github: https://github.com/GregorR/mcb-multimapsfix