UltraBan Error

2012-04-14 18:05:58 [SEVERE] null

org.bukkit.command.CommandException: Unhandled exception executing command 'ipban' in plugin UltraBan v0.2.1

    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)

    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166)

    at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:473)

    at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:821)

    at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:781)

    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:764)

    at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:103)

    at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34)

    at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)

    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113)

    at org.getspout.spout.SpoutNetServerHandler.a(SpoutNetServerHandler.java:169)

    at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)

    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:551)

    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:449)

    at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

Caused by: java.lang.NullPointerException

    at com.modcrafting.ultrabans.commands.Ipban.onCommand(Ipban.java:130)

    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)

    ... 14 more