2012-07-03 19:49:06 [SEVERE] java.util.ConcurrentModificationException
2012-07-03 19:49:06 [SEVERE] Could not pass event PlayerJoinEvent to VanishNoPacket
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:304)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:460)
	at net.minecraft.server.ServerConfigurationManager.c(ServerConfigurationManager.java:132)
	at net.minecraft.server.NetLoginHandler.b(NetLoginHandler.java:129)
	at net.minecraft.server.NetLoginHandler.a(NetLoginHandler.java:41)
	at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:61)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:567)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(Unknown Source)
	at java.util.HashMap$KeyIterator.next(Unknown Source)
	at org.bukkit.permissions.PermissibleBase.clearPermissions(PermissibleBase.java:168)
	at org.bukkit.permissions.PermissibleBase.recalculatePermissions(PermissibleBase.java:149)
	at org.bukkit.permissions.PermissibleBase.addAttachment(PermissibleBase.java:124)
	at org.bukkit.permissions.PermissibleBase.addAttachment(PermissibleBase.java:106)
	at org.bukkit.craftbukkit.entity.CraftHumanEntity.addAttachment(CraftHumanEntity.java:110)
	at org.kitteh.vanish.VanishManager.toggleVanishQuiet(VanishManager.java:249)
	at org.kitteh.vanish.listeners.ListenPlayerJoin.onPlayerJoinEarly(ListenPlayerJoin.java:35)
	at sun.reflect.GeneratedMethodAccessor178.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302)
	... 9 more
2012-07-03 19:49:06 [SEVERE] 	at java.util.LinkedList$ListItr.checkForComodification(Unknown Source)
2012-07-03 19:49:06 [SEVERE] 	at java.util.LinkedList$ListItr.next(Unknown Source)
2012-07-03 19:49:06 [SEVERE] 	at org.bukkit.permissions.PermissibleBase.recalculatePermissions(PermissibleBase.java:160)
2012-07-03 19:49:06 [SEVERE] 	at org.bukkit.craftbukkit.entity.CraftHumanEntity.recalculatePermissions(CraftHumanEntity.java:130)
2012-07-03 19:49:06 [SEVERE] 	at org.bukkit.permissions.PermissionAttachment.setPermission(PermissionAttachment.java:82)
2012-07-03 19:49:06 [SEVERE] 	at com.shankshock.nicatronTg.Registration.Engines.DatabaseConnectionEngine.assignPlayerPermissions(DatabaseConnectionEngine.java:485)
2012-07-03 19:49:06 [SEVERE] 	at com.shankshock.nicatronTg.Registration.Engines.DatabaseConnectionEngine.initialJoinSetup(DatabaseConnectionEngine.java:262)
2012-07-03 19:49:06 [SEVERE] 	at com.shankshock.nicatronTg.Registration.Misc.JoinDelayCheck.run(JoinDelayCheck.java:19)
2012-07-03 19:49:06 [SEVERE] 	at org.bukkit.craftbukkit.scheduler.CraftWorker.run(CraftWorker.java:34)
2012-07-03 19:49:06 [SEVERE] 	at java.lang.Thread.run(Unknown Source)