crash on NEI getting Coke Oven/cant craft said oven

[CaelThunderwing]

Title: [sOLVED]crash on NEI getting Coke Oven/cant craft said oven

Version: 3.1.2

OS: Windows 7 x64 Ultimate

Java Version: Java 7u9

Description of Problem:

every time one tries to go as far as Cheatmode- get an coal coke oven they're desynced (Internal server error) and it disappears quickly on the table as if i banned the item,

its pretty much an Out of the box setup nothing disabled as far as mods go, and i doubut my plugins are the cause (SafeCreeper/tree assist/MorePlayerModels Server Side,Commandbook, World Edit, World Guard)

Error Messages:

"Internal Server Error" on using NEI Cheatmode to get one

Error Log:

From console window:

 

12:04:57 [WARNING] Failed to handle packet: java.lang.NullPointerException

java.lang.NullPointerException

        at net.minecraft.server.ItemStack.setData(ItemStack.java:153)

        at net.minecraft.server.ItemStack.<init>(ItemStack.java:39)

        at codechicken.core.PacketCustom.readItemStack(PacketCustom.java:409)

        at codechicken.nei.NEIServerPacketHandler.handleGiveItem(NEIServerPacket

Handler.java:116)

        at codechicken.nei.NEIServerPacketHandler.handlePacket(NEIServerPacketHa

ndler.java:21)

        at codechicken.core.CoreUtils.handlePacket(CoreUtils.java:150)

        at codechicken.core.PacketCustom.recieve(PacketCustom.java:451)

        at net.minecraft.server.mod_CodeChickenCore.onPacket250Received(mod_Code

ChickenCore.java:65)

        at net.minecraft.server.BaseMod.onPacket250Packet(BaseMod.java:93)

        at cpw.mods.fml.server.FMLBukkitHandler.handlePacket250(FMLBukkitHandler

.java:407)

        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:1338)

        at net.minecraft.server.Packet250CustomPayload.handle(SourceFile:46)

        at net.minecraft.server.NetworkManager.b(NetworkManager.java:234)

        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:119)

        at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:8

3)

        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:579)

        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

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

>

DERP. noticed railcraft is missing from server's mod folder, Never mind.