This plugin gets the same error (as posted by SeeD419) as your vanish plugin in that it is looking for "lapisredstone" folder but your zip...
It should probably be built into this plugin, but for now you do need it.
remove +group from ichat config to stop it showing the group. This is my config, this way colours + what it shows is all handled by permissions...
Build command not supported yet...
Is it possible to add a /modify type command to allow adding users to groups without having to manually edit the files?
Separate names with a comma.