Direwolf20 1.6.4 v1.0.2 user

2013-12-12 14:39:06 [INFO] [STDERR] java.lang.IllegalArgumentException: Comparison method violates its general contract!
2013-12-12 14:39:06 [INFO] [STDERR] at java.util.ComparableTimSort.mergeLo(ComparableTimSort.java:714)
2013-12-12 14:39:06 [INFO] [STDERR] at java.util.ComparableTimSort.mergeAt(ComparableTimSort.java:451)
2013-12-12 14:39:06 [INFO] [STDERR] at java.util.ComparableTimSort.mergeForceCollapse(ComparableTimSort.java:392)
2013-12-12 14:39:06 [INFO] [STDERR] at java.util.ComparableTimSort.sort(ComparableTimSort.java:191)
2013-12-12 14:39:06 [INFO] [STDERR] at java.util.ComparableTimSort.sort(ComparableTimSort.java:146)
2013-12-12 14:39:06 [INFO] [STDERR] at java.util.Arrays.sort(Arrays.java:472)
2013-12-12 14:39:06 [INFO] [STDERR] at java.util.Collections.sort(Collections.java:155)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.command.CommandHelp.func_71534_d(SourceFile:74)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.command.CommandHelp.func_71515_b(SourceFile:36)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.command.CommandHandler.func_71556_a(CommandHandler.java:88)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.network.NetServerHandler.func_72566_d(NetServerHandler.java:759)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.network.NetServerHandler.func_72481_a(NetServerHandler.java:728)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.network.packet.Packet3Chat.func_73279_a(SourceFile:49)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.network.TcpConnection.func_74428_b(TcpConnection.java:462)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.network.NetServerHandler.func_72570_d(NetServerHandler.java:141)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.network.NetworkListenThread.func_71747_b(NetworkListenThread.java:54)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.server.dedicated.DedicatedServerListenThread.func_71747_b(SourceFile:30)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:691)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:276)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
2013-12-12 14:39:06 [INFO] [STDERR] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)