Set wool color in the World class

So I'm trying to set a wool block with a blue color at a certain location, via the World class.

Code:

Bukkit.getWorld(world).getBlockAt(pgplayer.getCTWFlagLocation("red")).setTypeIdAndData(35, (byte) 11, true);

This code is found in a PlayerMoveEvent method. But doing so returns this error

Code:

2013-06-13 17:27:54 [SEVERE] Could not pass event PlayerMoveEvent to PwnGames v2.3
org.bukkit.event.EventException
at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:222)
at net.minecraft.server.v1_5_R3.Packet10Flying.handle(SourceFile:136)
at net.minecraft.server.v1_5_R3.NetworkManager.b(NetworkManager.java:292)
at net.minecraft.server.v1_5_R3.PlayerConnection.d(PlayerConnection.java:115)
at net.minecraft.server.v1_5_R3.ServerConnection.b(SourceFile:35)
at net.minecraft.server.v1_5_R3.DedicatedServerConnection.b(SourceFile:30)
at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:581)
at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:226)
at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:477)
at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:410)
at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NullPointerException
at com.pwncraftpvp.PwnGames.PwnGamesMain.CTWReturnFlag(PwnGamesMain.java:1276)
at sun.reflect.GeneratedMethodAccessor6.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.java:425)

I've been searching for other methods to do so, but couldn't find any.


EDIT:
It might have something to do with pgplayer.getCTWFlagLocation(), as even doing this

Code:

Bukkit.getWorld(world).getBlockAt(pgplayer.getCTWFlagLocation("blue")).setType(Material.AIR);

returns an error.

getCTWFlagLocation():

Code:

    public Location getCTWFlagLocation(String redblue){
        return new Location(Bukkit.getWorld("Games"), pg.getConfig().getDouble(pg.world + "." + redblue + ".flag.x"), pg.getConfig().getDouble(pg.world + "." + redblue + ".flag.y"), pg.getConfig().getDouble(pg.world + "." + redblue + ".flag.z"));
    }

 

Is your "pgplayer" null? Do the values in the config exist? Maybe do some debug messages or split that line into multiple lines to see what is null.