07:48:42 [SEVERE] Could not pass event PlayerChangedWorldEvent to MultiInv
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:303)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:441)
        at net.minecraft.server.ServerConfigurationManager.moveToWorld(ServerConfigurationManager.java:320)
        at org.bukkit.craftbukkit.entity.CraftPlayer.teleport(CraftPlayer.java:368)
        at org.bukkit.craftbukkit.entity.CraftEntity.teleport(CraftEntity.java:167)
        at com.onarandombox.MultiverseCore.utils.SimpleSafeTTeleporter.safelyTeleport(SimpleSafeTTeleporter.java:216)
        at com.onarandombox.MultiverseCore.commands.TeleportCommand.runCommand(TeleportCommand.java:163)
        at com.pneumaticraft.commandhandler.multiverse.CommandHandler.checkAndRunCommand(CommandHandler.java:280)
        at com.pneumaticraft.commandhandler.multiverse.CommandHandler.processFoundCommands(CommandHandler.java:144)
        at com.pneumaticraft.commandhandler.multiverse.CommandHandler.locateAndRunCommand(CommandHandler.java:94)
        at com.onarandombox.MultiverseCore.MultiverseCore.onCommand(MultiverseCore.java:474)
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166)
        at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:461)
        at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:818)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:778)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:761)
        at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:33)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:112)
        at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:554)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:452)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:490)
Caused by: java.lang.NullPointerException
        at uk.co.tggl.pluckerpluck.multiinv.listener.MIPlayerListener.onPlayerChangedWorld(MIPlayerListener.java:80)
        at sun.reflect.GeneratedMethodAccessor271.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301)
        ... 24 more