Hi, So I have a nice large variety of commandbook errors on 1.7.2 bukkit, including being unable to ban offline players and unban offline players... Code: [09:08:03] [Server thread/INFO]: callous4567 issued server command: /ban Plasmonius -o [09:08:03] [Server thread/WARN]: com.sk89q.minecraft.util.commands.WrappedCommandException: java.lang.NoSuchMethodError: org.bukkit.OfflinePlayer.getUniqueId()Ljava/util/UUID; [09:08:03] [Server thread/WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:543) [09:08:03] [Server thread/WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:520) [09:08:03] [Server thread/WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.execute(CommandsManager.java:409) [09:08:03] [Server thread/WARN]: at com.zachsthings.libcomponents.bukkit.BukkitComponent.onCommand(BukkitComponent.java:80) [09:08:03] [Server thread/WARN]: at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:52) [09:08:03] [Server thread/WARN]: at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:175) [09:08:03] [Server thread/WARN]: at org.bukkit.craftbukkit.v1_7_R1.CraftServer.dispatchCommand(CraftServer.java:683) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.PlayerConnection.handleCommand(PlayerConnection.java:952) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:814) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.PacketPlayInChat.handle(PacketPlayInChat.java:47) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:655) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [09:08:03] [Server thread/WARN]: at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [09:08:03] [Server thread/WARN]: Caused by: java.lang.NoSuchMethodError: org.bukkit.OfflinePlayer.getUniqueId()Ljava/util/UUID; [09:08:03] [Server thread/WARN]: at com.sk89q.commandbook.bans.BansComponent$Commands.ban(BansComponent.java:183) [09:08:03] [Server thread/WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [09:08:03] [Server thread/WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [09:08:03] [Server thread/WARN]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [09:08:03] [Server thread/WARN]: at java.lang.reflect.Method.invoke(Method.java:606) [09:08:03] [Server thread/WARN]: at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:533) [09:08:03] [Server thread/WARN]: ... 17 more Thats the thing pretty much, and theres alot of errors and I cannot seem to find a fix. Can anyone offer any advice ?