org.bukkit.command.CommandException: Unhandled exception executing command 'openalc' in plugin tekkitrestrict v0.97
        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:664)
        at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:862)
        at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:818)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:800)
        at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34)
        at net.minecraft.server.NetworkManager.b(NetworkManager.java:262)
        at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:119)
        at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:97)
        at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:651)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:525)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.NullPointerException