[01:01:40] [Server thread/ERROR]: Could not pass event PlayerGameModeChangeEvent to MultiInv v3.3.6-dev
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-044d928-e8c6403]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-044d928-e8c6403]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-044d928-e8c6403]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-044d928-e8c6403]
	at org.bukkit.craftbukkit.v1_8_R3.entity.CraftPlayer.setGameMode(CraftPlayer.java:757) [spigot.jar:git-Spigot-044d928-e8c6403]
	at com.sk89q.commandbook.PlayerComponent$Commands.gamemode(PlayerComponent.java:116) [CommandBook.jar:2.5-SNAPSHOT]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_45]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_45]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_45]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_45]
	at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:528) [WorldEdit.jar:?]
	at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:516) [WorldEdit.jar:?]
	at com.sk89q.minecraft.util.commands.CommandsManager.execute(CommandsManager.java:409) [WorldEdit.jar:?]
	at com.zachsthings.libcomponents.bukkit.BukkitComponent.onCommand(BukkitComponent.java:80) [CommandBook.jar:2.5-SNAPSHOT]
	at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:54) [WorldEdit.jar:?]
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) [spigot.jar:git-Spigot-044d928-e8c6403]
	at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:642) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1135) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:970) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-044d928-e8c6403]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_45]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_45]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SystemUtils.java:19) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:718) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:367) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:657) [spigot.jar:git-Spigot-044d928-e8c6403]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:560) [spigot.jar:git-Spigot-044d928-e8c6403]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_45]
Caused by: java.lang.NullPointerException
	at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:94) ~[spigot.jar:git-Spigot-044d928-e8c6403]
	at uk.co.tggl.pluckerpluck.multiinv.inventory.MIItemStack.getItemStack(MIItemStack.java:161) ~[?:?]
	at uk.co.tggl.pluckerpluck.multiinv.inventory.MIItemStack.<init>(MIItemStack.java:104) ~[?:?]
	at uk.co.tggl.pluckerpluck.multiinv.inventory.MIInventory.<init>(MIInventory.java:92) ~[?:?]
	at uk.co.tggl.pluckerpluck.multiinv.player.MIPlayerFile.getInventory(MIPlayerFile.java:153) ~[?:?]
	at uk.co.tggl.pluckerpluck.multiinv.player.MIPlayer.loadGroup(MIPlayer.java:420) ~[?:?]
	at uk.co.tggl.pluckerpluck.multiinv.player.MIPlayer.saveEnderchestInventory(MIPlayer.java:169) ~[?:?]
	at uk.co.tggl.pluckerpluck.multiinv.listener.MIPlayerListener.onPlayerGameModeChange(MIPlayerListener.java:482) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_45]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_45]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_45]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_45]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-044d928-e8c6403]
	... 29 more