Bukkit

What steps will reproduce the problem?
1.When i typing /rb feedback <myregionname> <anynumber>
2. Regions will not spawns
3.

What is the expected output? What do you see instead?

What version of the product are you using?
RegionBlock - newest
mc-CraftBukkit version git-Bukkit-1.4.2-R0.2-b2455jnks (MC: 1.4.2)

Do you have an error log of what happened?
2012-11-04 22:45:16 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'rb' in plugin RegenBlock vBeta 4.5
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46)
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:185)
    at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:504)
    at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:911)
    at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:824)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:806)
    at net.minecraftserverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:124)
    at net.minecraftserverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:124)
    at net.minecraftserverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:124)
    at net.minecraftserverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:124)
    at net.minecraftserverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:124)
    at net.minecraftserverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:124)
    at net.minecraftserverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:124)
    at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:44)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:282)
    at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:111)
    at net.minecraft.server.ServerConnection.b(SourceFile:35)
    at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
    at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:578)
    at net.minecraft.server.DedicatedServer.r(DedicatedServer.java:215)
    at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:495)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:428)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:818)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 3
    at net.dmg2.RegenBlock.RegenBlockCommandExecutor.executeFeedback(RegenBlockCommandExecutor.java:258)
    at net.dmg2.RegenBlock.RegenBlockCommandExecutor.execute(RegenBlockCommandExecutor.java:93)
    at net.dmg2.RegenBlock.RegenBlockCommandExecutor.onCommand(RegenBlockCommandExecutor.java:37)
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
    ... 22 more

Please provide any additional information below.