Skript - Region.

Witajcie koledzy i koleżanki. Napisalem swój skrypcik na anty ucieczke podczas pvp na region spawn, to jest kod:

on damage:
    victim is player
    attacker is player
    if {ochrona.%victim%} is true:
        cancel event
    if {ochrona.%attacker%} is true:
        cancel event
    else:
        if {in.combat.%attacker%} is true:
            set {seconds.until.out.%attacker%} to 10
            stop
        send "<light red>Jestes w walce. Nie wychodz z gry!" to attacker
        set {in.combat.%attacker%} to true
        set {seconds.until.out.%attacker%} to 10
        while {seconds.until.out.%attacker%} is more than 1:
            {seconds.until.out.%attacker%} is not set:
                stop
            subtract 1 from {seconds.until.out.%attacker%}
            wait 1 second
        delete {in.combat.%attacker%}
        delete {seconds.until.out.%attacker%}
        send "<light green>Mozesz sie bezpiecznie wylogowac" to attacker
on entering of region "spawnik":
    {in.combat.%player%} is true
    cancel event
    push the player upwards at speed 0.3
    push the player horizontally forward at speed -1
    send "&cKtos cie oderzyl, wiec nie mozesz teraz wrocic na bezpieczna strefe!"

lecz w konsoli wywala mi takie błędy:

[11:44:38] [Server thread/ERROR]: Could not pass event PlayerMoveEvent to Skript v2.1.2
java.lang.IncompatibleClassChangeError: Found interface com.sk89q.worldguard.protection.ApplicableRegionSet, but class was expected
    at ch.njol.skript.hooks.regions.WorldGuardHook.getRegionsAt_i(WorldGuardHook.java:195) ~[?:?]
    at ch.njol.skript.hooks.regions.RegionsPlugin.getRegionsAt(RegionsPlugin.java:94) ~[?:?]
    at ch.njol.skript.hooks.regions.events.EvtRegionBorder$3.execute(EvtRegionBorder.java:158) ~[?:?]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:270) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.PacketPlayInFlying.a(SourceFile:126) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.PacketPlayInFlying$PacketPlayInLook.a(SourceFile:88) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_121]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_121]
    at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]