ChickenBones' code crashing Minecraft

---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 4/22/13 1:08 AM
Description: Code Chicken Core

codechicken.core.NetworkClosedException
        at codechicken.core.ClientUtils.getServerIP(ClientUtils.java:87)
        at codechicken.core.ClientUtils.isLocal(ClientUtils.java:101)
        at codechicken.nei.ClientPacketHandler.handleSMPCheck(ClientPacketHandler.java:107)
        at codechicken.nei.ClientPacketHandler.handlePacket(ClientPacketHandler.java:26)
        at codechicken.core.packet.PacketCustom$ClientPacketHandler.handle(PacketCustom.java:102)
        at codechicken.core.packet.PacketCustom$CustomPacketHandler.onPacketData(PacketCustom.java:71)
        at cpw.mods.fml.common.network.NetworkRegistry.handlePacket(NetworkRegistry.java:243)
        at cpw.mods.fml.common.network.NetworkRegistry.handleCustomPacket(NetworkRegistry.java:233)
        at cpw.mods.fml.common.network.FMLNetworkHandler.handlePacket250Packet(FMLNetworkHandler.java:71)
        at ayh.a(NetClientHandler.java:1483)
        at di.a(SourceFile:59)
        at cg.b(TcpConnection.java:458)
        at ayh.d(NetClientHandler.java:240)
        at ayp.b(WorldClient.java:92)
        at net.minecraft.client.Minecraft.l(Minecraft.java:1874)
        at net.minecraft.client.Minecraft.J(Minecraft.java:848)
        at net.minecraft.client.Minecraft.run(Minecraft.java:773)
        at java.lang.Thread.run(Thread.java:722)