can not pass event worldsaveevent to mcmmo v1.3.13-dev-b1093

[fungreenfox]

using the latest CraftBukkit version git-Bukkit-1.4.6-R0.3-15-g0104a40-b2600jnks (MC: 1.4.6) (Implementing API version 1.4.6-R0.4-SNAPSHOT)

05:33:24 [SEVERE] Could not pass event WorldSaveEvent to mcMMO v1.3.13-dev-b1093
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:35)
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
at net.minecraft.server.v1_4_6.MinecraftServer.saveChunks(MinecraftServer.java:339)
at net.minecraft.server.v1_4_6.MinecraftServer.q(MinecraftServer.java:498)
at net.minecraft.server.v1_4_6.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.v1_4_6.ThreadServerApplication.run(SourceFile:849)
Caused by: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
at java.util.HashMap$KeyIterator.next(Unknown Source)
at com.gmail.nossr50.util.blockmeta.chunkmeta.HashChunkManager.saveWorld(HashChunkManager.java:322)
at com.gmail.nossr50.listeners.WorldListener.onWorldSave(WorldListener.java:43)
at sun.reflect.GeneratedMethodAccessor291.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)
... 8 more

[Glitchfinder]

You're currently 262 builds out of date. Please check the latest version before filing an issue.

[fungreenfox]

ok i am trying with mcmmo 147 on 146 version bukkit, it seems to work. (changing to bukkit 147 soon).