Error Jump Ports

2012-08-08 10:21:46 [SEVERE] com.sk89q.minecraft.util.commands.WrappedCommandException: java.lang.NullPointerException
2012-08-08 10:21:46 [SEVERE] at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:532)
2012-08-08 10:21:46 [SEVERE] at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:509)
2012-08-08 10:21:46 [SEVERE] at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:464)
2012-08-08 10:21:46 [SEVERE] at com.sk89q.minecraft.util.commands.CommandsManager.execute(CommandsManager.java:409)
2012-08-08 10:21:46 [SEVERE] at net.roguedraco.jumpports.JumpPortsPlugin.onCommand(JumpPortsPlugin.java:157)
2012-08-08 10:21:46 [SEVERE] at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
2012-08-08 10:21:46 [SEVERE] at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:168)
2012-08-08 10:21:46 [SEVERE] at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:492)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:878)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:825)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:807)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:44)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.NetworkManager.b(NetworkManager.java:281)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:109)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.ServerConnection.b(SourceFile:35)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:579)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:472)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:404)
2012-08-08 10:21:46 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
2012-08-08 10:21:46 [SEVERE] Caused by: java.lang.NullPointerException
2012-08-08 10:21:46 [SEVERE] at net.roguedraco.jumpports.JumpPort.save(JumpPort.java:133)
2012-08-08 10:21:46 [SEVERE] at net.roguedraco.jumpports.commands.JumpPortCommands.create(JumpPortCommands.java:57)
2012-08-08 10:21:46 [SEVERE] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2012-08-08 10:21:46 [SEVERE] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
2012-08-08 10:21:46 [SEVERE] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2012-08-08 10:21:46 [SEVERE] at java.lang.reflect.Method.invoke(Method.java:601)
2012-08-08 10:21:46 [SEVERE] at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:522)
2012-08-08 10:21:46 [SEVERE] ... 20 more