Bukkit

What steps will reproduce the problem?
1. /friend theirname  (tells you an argument is required, but adds user to list)
2. /friend add theirname (tells you user is already on the list)
3. /friend list (gives internal server error, see below)

What is the expected output? What do you see instead?
i expect it to not add the user to the list, or at least /friend theirname gives back a status
what we get instead is simply a bug :)

What version of the product are you using?
164+bukkit r2.0

Do you have an error log of what happened?
yes

04:03:19 [INFO] mrfloris issued server command: /friend 1MBNetwork
04:03:29 [INFO] mrfloris issued server command: /friend add 1MBNetwork
04:03:35 [INFO] mrfloris issued server command: /friend list
04:03:35 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'friend' in plugin FriendMe v2.0
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:192)
    at org.bukkit.craftbukkit.v1_6_R3.CraftServer.dispatchCommand(CraftServer.java:528)
    at net.minecraft.server.v1_6_R3.PlayerConnection.handleCommand(PlayerConnection.java:968)
    at net.minecraft.server.v1_6_R3.PlayerConnection.chat(PlayerConnection.java:886)
    at net.minecraft.server.v1_6_R3.PlayerConnection.a(PlayerConnection.java:837)
    at net.minecraft.server.v1_6_R3.Packet3Chat.handle(SourceFile:49)
    at net.minecraft.server.v1_6_R3.NetworkManager.b(NetworkManager.java:296)
    at net.minecraft.server.v1_6_R3.PlayerConnection.e(PlayerConnection.java:116)
    at net.minecraft.server.v1_6_R3.ServerConnection.b(SourceFile:37)
    at net.minecraft.server.v1_6_R3.DedicatedServerConnection.b(SourceFile:30)
    at net.minecraft.server.v1_6_R3.MinecraftServer.t(MinecraftServer.java:592)
    at net.minecraft.server.v1_6_R3.DedicatedServer.t(DedicatedServer.java:227)
    at net.minecraft.server.v1_6_R3.MinecraftServer.s(MinecraftServer.java:488)
    at net.minecraft.server.v1_6_R3.MinecraftServer.run(MinecraftServer.java:421)
    at net.minecraft.server.v1_6_R3.ThreadServerApplication.run(SourceFile:583)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
    at main.Main.onCommand(Main.java:177)
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
    ... 15 more

Please provide any additional information below.
nice plugin :)