Bukkit

I get the below warning spammed in my console every 2 seconds.

Also I can't change the config purchase item OR change the currency from item to money

The config seems to do nothing in that respect.

Please update and fix these things this is the only plugin that can overwrite my __global__ worldguard region.

Thanks

[16:57:21 WARN]: [WorldClaim] Task #92 for WorldClaim v2.1 generated an exception
me.chris.WorldClaim.ParticleEffect$ParticlePacket$VersionIncompatibleException: Your current bukkit version seems to be incompatible with this library
at me.chris.WorldClaim.ParticleEffect$ParticlePacket.initialize(ParticleEffect.java:1417) ~[?:?]
at me.chris.WorldClaim.ParticleEffect$ParticlePacket.<init>(ParticleEffect.java:1348) ~[?:?]
at me.chris.WorldClaim.ParticleEffect.display(ParticleEffect.java:603) ~[?:?]
at me.chris.WorldClaim.ParticleEffect.display(ParticleEffect.java:622) ~[?:?]
at me.chris.WorldClaim.HelperMethods.spawnParticles(HelperMethods.java:100) ~[?:?]
at me.chris.WorldClaim.WorldClaimMain$1.run(WorldClaimMain.java:91) ~[?:?]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftTask.run(CraftTask.java:71) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.craftbukkit.v1_11_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:353) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:738) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:678) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:576) [spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]
Caused by: java.lang.ClassNotFoundException: net.minecraft.server.v1_11_R1.Packet63WorldParticles
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:91) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot-1.11.2.jar:git-Spigot-3fb9445-6e3cec8]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_131]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_131]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_131]
at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_131]
at me.chris.WorldClaim.ReflectionUtils$PackageType.getClass(ReflectionUtils.java:414) ~[?:?]
at me.chris.WorldClaim.ParticleEffect$ParticlePacket.initialize(ParticleEffect.java:1411) ~[?:?]
... 12 more