13:49:15 [SEVERE] Could not pass event PLAYER_QUIT to PermissionsBukkit
java.lang.IllegalArgumentException: Attachment cannot be null
        at org.bukkit.permissions.PermissibleBase.removeAttachment(PermissibleBa
se.java:134)
        at org.bukkit.craftbukkit.entity.CraftHumanEntity.removeAttachment(Craft
HumanEntity.java:104)
        at com.platymuus.bukkit.permissions.PermissionsPlugin.unregisterPlayer(P
ermissionsPlugin.java:137)
        at com.platymuus.bukkit.permissions.PlayerListener.onPlayerQuit(PlayerLi
stener.java:24)
        at org.bukkit.plugin.java.JavaPluginLoader$2.execute(JavaPluginLoader.ja
va:251)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:58)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:338)
        at net.minecraft.server.ServerConfigurationManager.disconnect(ServerConf
igurationManager.java:146)
        at net.minecraft.server.NetServerHandler.disconnect(NetServerHandler.jav
a:121)
        at org.bukkit.craftbukkit.entity.CraftPlayer.kickPlayer(CraftPlayer.java
:139)
        at com.vildaberper.DefaultCommands.Command.Kick.kick(Kick.java:35)
        at com.vildaberper.DefaultCommands.DefaultCommands.onCommand(DefaultComm
ands.java:335)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:35)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:12
9)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:3
52)
        at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.
java:737)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:701)

        at org.bukkit.craftbukkit.entity.CraftPlayer.chat(CraftPlayer.java:152)
        at com.vildaberper.DefaultCommands.Listener.DCPlayerListener.onPlayerCom
mandPreprocess(DCPlayerListener.java:428)
        at org.bukkit.plugin.java.JavaPluginLoader$5.execute(JavaPluginLoader.ja
va:272)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:58)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:338)
        at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.
java:730)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:701)

        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:694)
        at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:89)
        at net.minecraft.server.NetworkListenThread.a(SourceFile:105)
        at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:454)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:363)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)