Bukkit

In the latest version of LobbyAPI, when I add a world it just puts an error in the console and tells the player that an internal error occurred. However, when I try to add the world the second time, it says that the world has been added, and it shows up when I do /hub or /lobby, but when I try to remove the world, it says that there are no worlds registered. The world appears to be right in the configuration files, but after a server restart, the world is no longer visible in /hub or /lobby, and when I try to add it again, the plugin tells me that the world is registered in the config file but not in LobbyAPI. Any help would be appreciated.

Could you post the error that appears in the console?