AOTBT hamachi crash

[nickyrocks2]

hello! My friend and I are playing on a Hamachi AOTBT server he set up. Every time i try to join it crashes:/ We were playing last night but this issue just started happening! I have been on almost everything related to this. i have tried doing the environment variables, config oven and Dna breeder changes but nothing works! He can get on but i cant. ill post the crash file so someone can help me. PLEASE HELP SOON! I REALLY WANT TO PLAY! I HAVE MANYULLYN TOOLS AND WEAPONS AND AN EPIC HOUSE!please help;-;

load(Configuration.java:625)
    at net.minecraftforge.common.Configuration.<init>(Configuration.java:100)
    at net.minecraftforge.common.Configuration.<init>(Configuration.java:106)
    at mapwriter.forge.MwConfig.<init>(MwConfig.java:12)
    at mapwriter.Mw.loadWorldConfig(Mw.java:238)
    at mapwriter.Mw.onClientLoggedIn(Mw.java:475)
    at mapwriter.forge.MwConnectionHandler.clientLoggedIn(MwConnectionHandler.java:52)
    at cpw.mods.fml.common.network.NetworkRegistry.clientLoggedIn(NetworkRegistry.java:211)
    at cpw.mods.fml.common.network.FMLNetworkHandler.onConnectionEstablishedToServer(FMLNetworkHandler.java:91)
    at net.minecraft.client.multiplayer.NetClientHandler.func_72455_a(NetClientHandler.java:357)
    at net.minecraft.network.packet.Packet1Login.func_73279_a(Packet1Login.java:119)
    at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:462)
    at cpw.mods.fml.client.FMLClientHandler.disconnectIDMismatch(FMLClientHandler.java:600)
    at cpw.mods.fml.common.FMLCommonHandler.disconnectIDMismatch(FMLCommonHandler.java:463)
    at cpw.mods.fml.common.network.ModIdMapPacket.execute(ModIdMapPacket.java:101)
    at cpw.mods.fml.common.network.FMLNetworkHandler.handleFMLPacket(FMLNetworkHandler.java:116)
    at cpw.mods.fml.common.network.FMLNetworkHandler.handlePacket250Packet(FMLNetworkHandler.java:81)
    at net.minecraft.client.multiplayer.NetClientHandler.func_72501_a(NetClientHandler.java:1651)
    at net.minecraft.network.packet.Packet250CustomPayload.func_73279_a(SourceFile:61)
    at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:462)
    at net.minecraft.client.multiplayer.NetClientHandler.func_72551_d(NetClientHandler.java:281)
    at net.minecraft.client.multiplayer.GuiConnecting.func_73876_c(GuiConnecting.java:51)
    at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1580)
    at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:910)
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:838)
    at net.minecraft.client.main.Main.main(SourceFile:101)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(-2)
    at sun.reflect.NativeMethodAccessorImpl.invoke(-1)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(-1)
    at java.lang.reflect.Method.invoke(-1)
    at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:27)