Multiinv Error

2013-07-17 00:14:18 [SEVERE] Could not pass event PlayerGameModeChangeEvent to MultiInv v3.2.6
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
    at org.bukkit.craftbukkit.v1_6_R2.entity.CraftPlayer.setGameMode(CraftPlayer.java:553)
    at com.onarandombox.MultiverseCore.listeners.MVPlayerListener$2.run(MVPlayerListener.java:349)
    at org.bukkit.craftbukkit.v1_6_R2.scheduler.CraftTask.run(CraftTask.java:53)
    at org.bukkit.craftbukkit.v1_6_R2.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
    at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:522)
    at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:226)
    at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:486)
    at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:419)
    at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NullPointerException
    at uk.co.tggl.pluckerpluck.multiinv.inventory.MIItemStack.getItemMetaSerialized(MIItemStack.java:396)
    at uk.co.tggl.pluckerpluck.multiinv.inventory.MIItemStack.<init>(MIItemStack.java:58)
    at uk.co.tggl.pluckerpluck.multiinv.inventory.MIInventory.<init>(MIInventory.java:31)
    at uk.co.tggl.pluckerpluck.multiinv.player.MIPlayer.saveInventory(MIPlayer.java:59)
    at uk.co.tggl.pluckerpluck.multiinv.listener.MIPlayerListener.onPlayerGameModeChange(MIPlayerListener.java:178)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.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:425)
    ... 12 more