Error msg from redpower

[soulscapex]

Title: Error msg from redpower

Version: 3.1.2

OS: win 7

Java Version: 7

Description of Problem:

When ever the player enters his chunk i get a msg saying welcome redpower to the server... then the error shows up on the log.......... they have block breakers ,, filters running , but so do others and no problems.

Error Messages:

6:08:18 PM 9/22/2012 [sEVERE] Could not pass event PrepareItemCraftEvent to mcjobs

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.fireEvent(SimplePluginManager.java:482)

at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:467)

at org.bukkit.craftbukkit.event.CraftEventFactory.callPreCraftEvent(CraftEventFactory.java:509)

at net.minecraft.server.CraftingManager.craft(CraftingManager.java:250)

at eloraam.base.ContainerAdvBench.a(ContainerAdvBench.java:78)

at eloraam.base.InventorySubCraft.splitStack(InventorySubCraft.java:66)

at net.minecraft.server.SlotResult.c(SlotResult.java:71)

at eloraam.base.SlotCraftRefill.c(SlotCraftRefill.java:125)

at net.minecraft.server.Container.clickItem(Container.java:250)

at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:1089)

at net.minecraft.server.Packet102WindowClick.handle(SourceFile:28)

at net.minecraft.server.NetworkManager.b(NetworkManager.java:251)

at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:106)

at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:82)

at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:457)

at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

Caused by: java.lang.NullPointerException

at org.bukkit.event.inventory.InventoryEvent.getViewers(InventoryEvent.java:38)

at com.dmgkz.mcjobs.listeners.Crafting.preCraftEvent(Crafting.java:86)

at sun.reflect.GeneratedMethodAccessor146.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)

... 18 more

Error Log: