[00:27:00] [Server thread/ERROR] [FML]: There was a critical exception handling
a packet on channel FML
java.lang.NullPointerException
        at mcp.mobius.opis.events.PlayerTracker.getPlayerAccessLevel(PlayerTrack
er.java:45) ~[PlayerTracker.class:?]
        at mcp.mobius.opis.events.PlayerTracker.getPlayerAccessLevel(PlayerTrack
er.java:41) ~[PlayerTracker.class:?]
        at mcp.mobius.opis.network.enums.Message.canPlayerUseCommand(Message.jav
a:130) ~[Message.class:?]
        at mcp.mobius.opis.network.PacketManager.validateAndSend(PacketManager.j
ava:274) ~[PacketManager.class:?]
        at mcp.mobius.opis.events.PlayerTracker.onPlayerLogin(PlayerTracker.java
:107) ~[PlayerTracker.class:?]
        at cpw.mods.fml.common.eventhandler.ASMEventHandler_275_PlayerTracker_on
PlayerLogin_PlayerLoggedInEvent.invoke(.dynamic) ~[?:?]
        at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandl
er.java:54) ~[ASMEventHandler.class:?]
        at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) ~[E
ventBus.class:?]
        at cpw.mods.fml.common.FMLCommonHandler.firePlayerLoggedIn(FMLCommonHand
ler.java:550) ~[FMLCommonHandler.class:?]
        at net.minecraft.server.management.ServerConfigurationManager.a(ServerCo
nfigurationManager.java:180) ~[oi.class:?]
        at cpw.mods.fml.common.network.handshake.NetworkDispatcher.completeServe
rSideConnection(NetworkDispatcher.java:173) ~[NetworkDispatcher.class:?]
        at cpw.mods.fml.common.network.handshake.NetworkDispatcher.completeHands
hake(NetworkDispatcher.java:446) ~[NetworkDispatcher.class:?]
        at cpw.mods.fml.common.network.internal.HandshakeCompletionHandler.chann
elRead0(HandshakeCompletionHandler.java:17) ~[HandshakeCompletionHandler.class:?
]
        at cpw.mods.fml.common.network.internal.HandshakeCompletionHandler.chann
elRead0(HandshakeCompletionHandler.java:11) ~[HandshakeCompletionHandler.class:?
]
        at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChanne
lInboundHandler.java:98) ~[SimpleChannelInboundHandler.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(Defau
ltChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(Default
ChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToM
essageDecoder.java:103) ~[MessageToMessageDecoder.class:?]
        at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMes
sageCodec.java:111) ~[MessageToMessageCodec.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(Defau
ltChannelHandlerContext.java:337) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(Default
ChannelHandlerContext.java:323) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChanne
lPipeline.java:785) ~[DefaultChannelPipeline.class:?]
        at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChanne
l.java:169) ~[EmbeddedChannel.class:?]
        at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FML
ProxyPacket.java:77) [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.jav
a:659) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(Dedicated
Server.java:334) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.jav
a:547) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [M
inecraftServer.class:?]
        at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
[li.class:?]
[00:27:00] [Server thread/WARN]: Failed to handle packet for /192.168.0.1:55766
java.lang.NullPointerException
        at cpw.mods.fml.common.network.internal.FMLProxyPacket.func_148833_a(FML
ProxyPacket.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.jav
a:659) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(Dedicated
Server.java:334) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.jav
a:547) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [M
inecraftServer.class:?]
        at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
[li.class:?]
[00:27:00] [Server thread/INFO]: woutwoot lost connection: TextComponent{text='I
nternal server error', siblings=[], style=Style{hasParent=false, color=null, bol
d=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEve
nt=null}}
[00:27:00] [Server thread/INFO]: º4WoutWootºf left the game