Bukkit

What steps will reproduce the problem?
1. Place a stone

What is the expected output? What do you see instead?
Expect to create a region, which it does, but gives the error message pasted below.

As I test i am creating a region as typing this.
Placed a Coal Ore, it created ps-39x64y215z, with correct flags/enter/exit messages.
My players started saying that they were not getting the enter/exit messages anymore. I traced it to a server restart.
Everytime the server restarts, it deletes the region.
Saved/restarted the server, and the region mentioned above is now gone. not in the /rg list, or standing in the region and doing /rg info. Nothing listed.

What version of the product are you using?
v1.9b
1.6.2 CB Beta Build

Do you have an error log of what happened?

22:08:13 [SEVERE] Could not pass event BlockPlaceEvent to ProtectionStones v1.9b

org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:427)
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:62)
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j
ava:477)
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:462)
        at org.bukkit.craftbukkit.v1_6_R2.event.CraftEventFactory.callBlockPlace
Event(CraftEventFactory.java:112)
        at net.minecraft.server.v1_6_R2.ItemBlock.processBlockPlace(ItemBlock.ja
va:89)
        at net.minecraft.server.v1_6_R2.ItemBlock.interactWith(ItemBlock.java:73
)
        at net.minecraft.server.v1_6_R2.ItemStack.placeItem(ItemStack.java:79)
        at net.minecraft.server.v1_6_R2.PlayerInteractManager.interact(PlayerInt
eractManager.java:389)
        at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java
:628)
        at net.minecraft.server.v1_6_R2.Packet15Place.handle(SourceFile:58)
        at net.minecraft.server.v1_6_R2.NetworkManager.b(NetworkManager.java:296
)
        at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java
:116)
        at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
        at net.minecraft.server.v1_6_R2.DedicatedServerConnection.b(SourceFile:3
0)
        at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:5
90)
        at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:2
26)
        at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:4
86)
        at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java
:419)
        at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:5
82)
Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java
.lang.Enum
        at com.sk89q.worldguard.protection.flags.EnumFlag.marshal(EnumFlag.java:
29)
        at com.sk89q.worldguard.protection.flags.SetFlag.marshal(SetFlag.java:85
)
        at com.sk89q.worldguard.protection.flags.SetFlag.marshal(SetFlag.java:36
)
        at com.sk89q.worldguard.protection.databases.YAMLDatabase.addMarshalledF
lag(YAMLDatabase.java:280)
        at com.sk89q.worldguard.protection.databases.YAMLDatabase.getFlagData(YA
MLDatabase.java:268)
        at com.sk89q.worldguard.protection.databases.YAMLDatabase.save(YAMLDatab
ase.java:240)
        at com.sk89q.worldguard.protection.databases.AbstractProtectionDatabase.
save(AbstractProtectionDatabase.java:43)
        at com.sk89q.worldguard.protection.managers.RegionManager.save(RegionMan
ager.java:69)
        at com.axeldios.ProtectionStones.ProtectionStonesBlockListener.onBlockPl
ace(ProtectionStonesBlockListener.java:306)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:425)
        ... 19 more

Sounds like WorldGuard isn't saving the region to it's file from memory, if they show after you place the PS but not during a server restart.

First of all I need to know the versions of Bukkit (full built version numbers), WorldGuard, WorldEdit, and ProtectionStones.

Also how is the restart being done, I've see hosting company's that forcible stop servers and restart them, and in the long run end up having lots of map and region corruption.

@AxelDios: Go

Bukkit 1.6.2-R0.1 (Build #02838)

WorldGuard 5.8

WorldEdit version 5.5.7

ProtectionStones v1.9b

I host the server myself, so it only shuts down when I tell it to. /save-all - /stop. It also autosaves every 5 minutes.

Thx for the quick response.