PermissionsEx was causing this issue. I uninstalled it and now it works! Problem resolved! I'm using Group Manager to make only one world have WorldEdit permissions and couldn't get it to work. I saw an older thread that said to do the following, but it didn't work. I tested this same thing with another plugin permission (for the EasyJetPack), and that worked. Yet WorldEdit still refuses to work. What's going on? This isn't making any sense. I removed groups from testworld world as indicated in the config file (only part of it shown): Code: # Worlds listed here have their settings mirrored in their children. # The first element 'world' is the main worlds name, and is the parent world. # subsequent elements 'world_nether' and 'world_the_end' are worlds which will use # the same user/groups files as the parent. # the element 'all_unnamed_worlds' specifies all worlds that aren't listed, and automatically mirrors them to it's parent. # Each child world can be configured to mirror the 'groups', 'users' or both files from its parent. world: world_nether: - users - groups world_the_end: - users - groups testworld: - users I added permission - worldedit.* and - easyjetpack.standard to the testworld world group.yml as indicated below: Code: groups: Default: default: true permissions: - -bukkit.command.kill - worldedit.* - easyjetpack.standard Edit: Nevermind! The issue was that I still had PermissionsEx installed and it was conflicting with GroupManager!