xAuth

On command:
2011-08-23 14:53:50 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'register' in plugin xAuth v2.0b4.1
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:37)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:129)
	at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:352)
	at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:737)
	at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:701)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:694)
	at net.minecraft.server.Packet3Chat.a(Packet3Chat.java:33)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:226)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:89)
	at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:436)
	at net.minecraft.server.NetworkListenThread.a(SourceFile:105)
	at net.minecraft.server.MinecraftServer.h(MinecraftServer.java:454)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:363)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:422)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
	at com.cypherx.xauth.Util.argsToString(Util.java:240)
	at com.cypherx.xauth.Util.fixArgs(Util.java:249)
	at com.cypherx.xauth.commands.RegisterCommand.onCommand(RegisterCommand.java:25)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:35)
	... 13 more

Startup:
2011-08-23 14:53:41 [INFO] [xAuth] 'Permissions' v3.1.6 support enabled!
2011-08-23 14:53:41 [INFO] [xAuth] Connection to database established!
2011-08-23 14:53:41 [INFO] [xAuth] Accounts: 3, Sessions: 2
2011-08-23 14:53:41 [INFO] [xAuth] v2.0b4.1 Enabled!


So you know, The only time it is an error, is I type: /register or /login, but if I did /login pancakes <or a password>, it will log me in successfully.