Console Error Output

2012-04-13 08:51:41 [SEVERE] com.griefcraft.scripting.ModuleException: LWC Module threw an uncaught exception! LWC version: 4.1.1 (b691)
2012-04-13 08:51:41 [SEVERE] 	at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:353)
2012-04-13 08:51:41 [SEVERE] 	at com.griefcraft.listeners.LWCBlockListener.onBlockPlace(LWCBlockListener.java:347)
2012-04-13 08:51:41 [SEVERE] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2012-04-13 08:51:41 [SEVERE] 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
2012-04-13 08:51:41 [SEVERE] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2012-04-13 08:51:41 [SEVERE] 	at java.lang.reflect.Method.invoke(Method.java:601)
2012-04-13 08:51:41 [SEVERE] 	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301)
2012-04-13 08:51:41 [SEVERE] 	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
2012-04-13 08:51:41 [SEVERE] 	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:459)
2012-04-13 08:51:41 [SEVERE] 	at org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPlaceEvent(CraftEventFactory.java:98)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.ItemBlock.interactWith(ItemBlock.java:71)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.ItemStack.placeItem(ItemStack.java:83)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.ItemInWorldManager.interact(ItemInWorldManager.java:303)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:636)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.Packet15Place.handle(SourceFile:39)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:551)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:449)
2012-04-13 08:51:41 [SEVERE] 	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
2012-04-13 08:51:41 [SEVERE] Caused by: java.lang.NullPointerException
2012-04-13 08:51:41 [SEVERE] 	at net.milkbowl.vault.permission.plugins.Permission_PermissionsBukkit.getPlayerGroups(Permission_PermissionsBukkit.java:200)
2012-04-13 08:51:41 [SEVERE] 	at net.milkbowl.vault.permission.Permission.getPlayerGroups(Permission.java:522)
2012-04-13 08:51:41 [SEVERE] 	at com.griefcraft.integration.permissions.VaultPermissions.getGroups(VaultPermissions.java:50)
2012-04-13 08:51:41 [SEVERE] 	at com.griefcraft.modules.limits.LimitsV2.getPlayerLimits(LimitsV2.java:308)
2012-04-13 08:51:41 [SEVERE] 	at com.griefcraft.modules.limits.LimitsV2.getEffectiveLimit(LimitsV2.java:348)
2012-04-13 08:51:41 [SEVERE] 	at com.griefcraft.modules.limits.LimitsV2.hasReachedLimit(LimitsV2.java:273)
2012-04-13 08:51:41 [SEVERE] 	at com.griefcraft.modules.limits.LimitsV2.onRegisterProtection(LimitsV2.java:162)
2012-04-13 08:51:41 [SEVERE] 	at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:339)
2012-04-13 08:51:41 [SEVERE] 	... 20 more