Bukkit

What steps will reproduce the problem?
1. Be owner of a region
2. Do /ps flag (flag)

What is the expected output? What do you see instead?
Expected to add flag, internal error occurred instead

What version of the product are you using?
Most recent (ProtectionStones 1.9j)

Do you have an error log of what happened?
Plasmm issued server command: /ps flag pvp deny
[18:07:16] [Server thread/ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'ps' in plugin ProtectionStones v1.9j
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:180) ~[craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at org.bukkit.craftbukkit.v1_7_R3.CraftServer.dispatchCommand(CraftServer.java:740) ~[craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.PlayerConnection.handleCommand(PlayerConnection.java:956) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:817) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.PacketPlayInChat.a(PacketPlayInChat.java:28) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.PacketPlayInChat.handle(PacketPlayInChat.java:47) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:157) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.ServerConnection.c(SourceFile:134) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:667) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:260) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:558) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:469) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
Caused by: java.lang.NullPointerException
    at java.util.concurrent.ConcurrentHashMap.put(Unknown Source) ~[?:1.7.0_72]
    at java.util.concurrent.ConcurrentHashMap.putAll(Unknown Source) ~[?:1.7.0_72]
    at java.util.concurrent.ConcurrentHashMap.<init>(Unknown Source) ~[?:1.7.0_72]
    at com.sk89q.worldguard.protection.regions.ProtectedRegion.setFlags(ProtectedRegion.java:463) ~[?:?]
    at com.axeldios.ProtectionStones.ProtectionStones.onCommand(ProtectionStones.java:1296) ~[?:?]
    at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[craftbukkit-dev.jar:git-Bukkit-1.7.9-R0.2-11-g3fd9db2-b3098jnks]
    ... 13 more

Please provide any additional information below.

Confirmed with Spigot latest build, WG6 beta5 and PS1.9j

http://pastebin.com/wHBqM3hJ

@Krauti2: Go

Any fixes?

Don't ask me. I am not the developer ;)

on Spigot 1.8.3 http://pastebin.com/nCKD67vH same errors. but if disable bPerm plugin flag work again?

I figured it out. use worldguard 1.5.whateverversion and protectionstones http://dev.bukkit.org/bukkit-plugins/protectionstones/files/47-protection-stones-1-9h/ . this combination works fine

The current version of WorldGuard ist 6.0.
1.5 sounds pretty weird to me.