Waypoints Error

2013-07-14 00:35:03 [INFO] Firstgamefreak issued server command: /wps
2013-07-14 00:35:03 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'wps' in plugin Waypoints v2.1
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:189)
	at org.bukkit.craftbukkit.v1_5_R3.CraftServer.dispatchCommand(CraftServer.java:523)
	at net.minecraft.server.v1_5_R3.PlayerConnection.handleCommand(PlayerConnection.java:971)
	at net.minecraft.server.v1_5_R3.PlayerConnection.chat(PlayerConnection.java:889)
	at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:846)
	at com.bergerkiller.bukkit.common.internal.network.CommonPacketHandler$CommonPlayerConnection.a(CommonPacketHandler.java:531)
	at net.minecraft.server.v1_5_R3.Packet3Chat.handle(Packet3Chat.java:44)
	at net.minecraft.server.v1_5_R3.NetworkManager.b(NetworkManager.java:292)
	at net.minecraft.server.v1_5_R3.PlayerConnection.d(PlayerConnection.java:115)
	at net.minecraft.server.v1_5_R3.ServerConnection.b(SourceFile:35)
	at net.minecraft.server.v1_5_R3.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:581)
	at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:226)
	at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:477)
	at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:410)
	at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
	at waypoints.WaypointPlugin.onCommand(WaypointPlugin.java:61)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
	... 16 more