kain184

hello all i am working on making a mod pack for me and my friends i have made a few in the past but this is the first time i have seen this issue can anyone help me with it [B#272] java.lang.IllegalArgumentException: Comparison method violates its general contract! [B#272] at java.util.ComparableTimSort.mergeHi(Unknown Source) ~[?:1.7.0_71] [B#272] at java.util.ComparableTimSort.mergeAt(Unknown Source) ~[?:1.7.0_71] [B#272] at java.util.ComparableTimSort.mergeForceCollapse(Unknown Source) ~[?:1.7.0_71] [B#272] at java.util.ComparableTimSort.sort(Unknown Source) ~[?:1.7.0_71] [B#272] at java.util.ComparableTimSort.sort(Unknown Source) ~[?:1.7.0_71] [B#272] at java.util.Arrays.sort(Unknown Source) ~[?:1.7.0_71] [B#272] at java.util.Collections.sort(Unknown Source) ~[?:1.7.0_71] [B#272] at net.minecraft.command.CommandHelp.func_71534_d(SourceFile:84) ~[au.class:?] [B#272] at net.minecraft.command.CommandHelp.func_71515_b(SourceFile:38) ~[au.class:?] [B#272] at net.minecraft.command.CommandHandler.func_71556_a(CommandHandler.java:94) [z.class:?] [B#272] at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:739) [nh.class:?] [B#272] at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:718) [nh.class:?] [B#272] at net.minecraft.network.play.client.C01PacketChatMessage.func_148833_a(SourceFile:37) [ir.class:?] [B#272] at net.minecraft.network.play.client.C01PacketChatMessage.func_148833_a(SourceFile:9) [ir.class:?] [B#272] at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:212) [ej.class:?] [B#272] at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:165) [nc.class:?] [B#272] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:659) [MinecraftServer.class:?] [B#272] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) [MinecraftServer.class:?] [B#272] at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111) [bsx.class:?] [B#272] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?] [B#272] at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [?:?] [B#272] [18:31:11] [Client thread/INFO]: [CHAT] An unknown error occurred while attempting to perform this command [B#272] [18:31:13] [Client thread/INFO]: net.minecraft.client.gui.GuiChat [B#272] [18:31:14] [Client thread/INFO]: net.minecraft.client.gui.GuiIngameMenu [B#272] [18:31:14] [Server thread/INFO]: Saving and pausing game. please do help as i would like to get this fixed asap modpack link http://api.technicpack.net/modpack/kainspack1710