Problem /help command not working from console

[Scott DTA]

I'm currently running a Monster 1.1.1 server on a GamingServers server using the FTB server jar. Every time I try to do the /help command from the console I get the following error. Does anyone know what might be causing this and how I can go about fixing it??‎ If more info is needed, please let me know what info you need.

Thanks,
Scott

Spoiler

3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] An unknown error occurred while attempting to perform this command
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] java.lang.IllegalArgumentException: Comparison method violates its general contract!
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at java.util.ComparableTimSort.mergeLo(Unknown Source)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at java.util.ComparableTimSort.mergeAt(Unknown Source)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at java.util.ComparableTimSort.mergeCollapse(Unknown Source)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at java.util.ComparableTimSort.sort(Unknown Source)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at java.util.ComparableTimSort.sort(Unknown Source)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at java.util.Arrays.sort(Unknown Source)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at java.util.Collections.sort(Unknown Source)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at net.minecraft.command.CommandHelp.func_71534_d(SourceFile:74)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at net.minecraft.command.CommandHelp.func_71515_b(SourceFile:36)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at net.minecraft.command.CommandHandler.func_71556_a(CommandHandler.java:88)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at net.minecraft.server.dedicated.DedicatedServer.func_71333_ah(DedicatedServer.java:315)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:277)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:587)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:484)
‎3‎:‎56‎:‎36‎ ‎AM
CONSOLE:
[INFO] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)

 

[Connor Gavitt]

I have no experience with the default ftbserver jar and thus can't help however /help works if you use mcpc which I suggest people use because it will actually help your server run better, though some items may be a little glitchy and some crashing may occur.