iplock error

2012-03-17 01:10:54 [SEVERE] null
org.bukkit.command.CommandException: Unhandled exception executing command 'login' in plugin IpLock v0.3
	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:469)
	at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:906)
	at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:866)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:849)
	at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:33)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:116)
	at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:554)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:452)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:490)
Caused by: java.lang.NullPointerException
	at iplock.IpLockCommandExecutor.getPass(IpLockCommandExecutor.java:107)
	at iplock.IpLockCommandExecutor.onCommand(IpLockCommandExecutor.java:56)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
	... 12 more