Cannot connect

[20:13:26] [Server thread/INFO]: scootLMC joined the game
[20:13:26] [Server thread/WARN]: Failed to handle packet for /myip:port
java.lang.NullPointerException at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FMLProxyPacket.java:101) ~[FMLProxyPacket.class:?] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) ~[ej.class:?] at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) [lt.class:?] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?] at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
[20:13:26] [Server thread/INFO]: scootLMC lost connection: TextComponent{text='Internal server error', siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null}}
[20:13:26] [Server thread/INFO]: scootLMC left the game