PotionProtect error

I play on a tekkit server and they use the potionprotect plugin and another player protected over my house because i didn't have any potions so when the owner tries removing the protection he gets this error on the console:
"org.bukkit.command.CommandException: Unhandled exception executing command 'prot' in plugin PotionProtect v1.1.4
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166)
at forge.bukkit.ForgeCommandMap.dispatch(ForgeCommandMap.java:55)
at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:497)
at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:843)
at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:799)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:781)
at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34)
at net.minecraft.server.NetworkManager.b(NetworkManager.java:234)
at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:119)
at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:83)
at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:579)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.NullPointerException
at cokoc.potionprotect.PotionProtection.onCommand(PotionProtection.java:172)
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)"

 

You'll need to ask the Tekkit folks for help. This is the Bukkit forum.