Forge Mod Loader Crash Report

[slayer6409]

http://pastebin.com/JdM7eR8P

[uyjulian]

One of your mod are causing this problem:

 

java.lang.NoSuchFieldError: fly

        at ed.<init>(Packet13PlayerLookMove.java:23)

        at iv.a(NetServerHandler.java:426)

        at gm.a(ServerConfigurationManager.java:124)

        at bec.b(IntegratedServerListenThread.java:96)

        at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:703)

        at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599)

        at bdz.q(IntegratedServer.java:123)

        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)

        at fy.run(SourceFile:849)