Kicked out when crafting 'Central Processing Unit' in SMP

[topheryun]

Title: Kicked out when crafting 'Central Processing Unit' in SMP

Version: 3.1.2

OS: Windows 7 64bit

Java Version: 7.0.090

Description of Problem:

When I make the Central Processing Unit in my SMP server, I get kicked off the server. I have no troubles at all making this in SSP.

Error Messages:

Disconnected by Server

Internal server error

Error Log:

25.01 12:38:07 [Disconnect] User topheryun has disconnected, reason: unknown

25.01 12:38:07 [server] INFO list

25.01 12:38:04 [server] INFO at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

25.01 12:38:04 [server] INFO at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

25.01 12:38:04 [server] INFO at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:579)

25.01 12:38:04 [server] INFO at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:83)

25.01 12:38:04 [server] INFO at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:119)

25.01 12:38:04 [server] INFO at net.minecraft.server.NetworkManager.b(NetworkManager.java:234)

25.01 12:38:04 [server] INFO at net.minecraft.server.Packet250CustomPayload.handle(SourceFile:46)

25.01 12:38:04 [server] INFO at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:1338)

25.01 12:38:04 [server] INFO at cpw.mods.fml.server.FMLBukkitHandler.handlePacket250(FMLBukkitHandler.java:407)

25.01 12:38:04 [server] INFO at net.minecraft.server.BaseMod.onPacket250Packet(BaseMod.java:93)

25.01 12:38:04 [server] INFO at net.minecraft.server.mod_CodeChickenCore.onPacket250Received(mod_CodeChickenCore.java:65)

25.01 12:38:04 [server] INFO at codechicken.core.PacketCustom.recieve(PacketCustom.java:451)

25.01 12:38:04 [server] INFO at codechicken.core.CoreUtils.handlePacket(CoreUtils.java:150)

25.01 12:38:04 [server] INFO at codechicken.nei.NEIServerPacketHandler.handlePacket(NEIServerPacketHandler.java:21)

25.01 12:38:04 [server] INFO at codechicken.nei.NEIServerPacketHandler.handleGiveItem(NEIServerPacketHandler.java:116)

25.01 12:38:04 [server] INFO at codechicken.core.PacketCustom.readItemStack(PacketCustom.java:409)

25.01 12:38:04 [server] INFO at net.minecraft.server.ItemStack.<init>(ItemStack.java:39)

25.01 12:38:04 [server] INFO at net.minecraft.server.ItemStack.setData(ItemStack.java:153)

25.01 12:38:04 [server] INFO java.lang.NullPointerException

25.01 12:38:04 [server] WARNING Failed to handle packet: java.lang.NullPointerException

[Ferus Demens]

Maybe it's a banned item for that server? Some servers have it set to disconnect you as soon as you attempt to take the item out of the crafting menu.

[topheryun]

I don't have any plugins for my server though.