Internal Server Error

[Caner]

Launcher/pack Version: 1.2.5 (Tekkit 3.0.3)

Operating System: Windows 7(64 bit)

Version of Java: 7

Description of Problem: I get Internal Server Error while trying to connect my server.

Error Messages: Internal Server Error

[iNFO] Sending serverside check to: turret001

2012-05-31 21:56:22 [WARNING] Failed to handle packet: java.lang.NullPointerException

java.lang.NullPointerException

at codechicken.nei.NEIServerConfig.canPlayerUseFeature(NEIServerConfig.java:84)

at codechicken.nei.NEIServerPacketHandler.sendPermissableActionsTo(NEIServerPacketHandler.java:178)

at codechicken.nei.NEIServerPacketHandler.handlePacket(NEIServerPacketHandler.java:42)

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

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

at net.minecraft.server.mod_CodeChickenCore.onPacket250Received(mod_CodeChickenCore.java:65)

at net.minecraft.server.BaseMod.onPacket250Packet(BaseMod.java:74)

at cpw.mods.fml.server.FMLBukkitHandler.handlePacket250(FMLBukkitHandler.java:381)

at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:1444)

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:121)

at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)

at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:556)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:453)

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

[Caner]

Help please.

[Torezu]

Really? A bump? Let alone after only an hour? It almost makes me not want to help you. This board doesn't move fast enough to need bumps.

Your error says the problem is in your NEI.cfg file. Delete that, or otherwise edit it to remove some of the custom configuration stuff, and don't use it unless you know what you're doing.