Skript dziwny blad w promieniu

Mam dziwny błąd.

[22:09:56] [Server thread/ERROR]: #!#! [Skript] Severe Error:
[22:09:56] [Server thread/ERROR]: #!#!
[22:09:56] [Server thread/ERROR]: #!#! If you're developing an add-on for Skript this likely means that you have done something wrong.
[22:09:56] [Server thread/ERROR]: #!#! If you're a server admin however please go to http://dev.bukkit.org/server-mods/skript/tickets/
[22:09:56] [Server thread/ERROR]: #!#! and check whether this error has already been reported.
[22:09:56] [Server thread/ERROR]: #!#! If not please create a new ticket with a meaningful title, copy & paste this whole error into it,
[22:09:56] [Server thread/ERROR]: #!#! and describe what you did before it happened and/or what you think caused the error.
[22:09:56] [Server thread/ERROR]: #!#! If you think that it's a trigger that's causing the error please post the trigger as well.
[22:09:56] [Server thread/ERROR]: #!#! By following this guide fixing the error should be easy and done fast.
[22:09:56] [Server thread/ERROR]: #!#!
[22:09:56] [Server thread/ERROR]: #!#! Stack trace:
[22:09:56] [Server thread/ERROR]: #!#! java.util.NoSuchElementException
[22:09:56] [Server thread/ERROR]: #!#!     at ch.njol.skript.util.AABB$1.next(AABB.java:144)
[22:09:56] [Server thread/ERROR]: #!#!     at ch.njol.skript.util.AABB$1.next(AABB.java:1)
[22:09:56] [Server thread/ERROR]: #!#!     at ch.njol.util.coll.iterator.CheckedIterator.hasNext(CheckedIterator.java:50)
[22:09:56] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.Loop.walk(Loop.java:87)
[22:09:56] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:91)
[22:09:56] [Server thread/ERROR]: #!#!     at ch.njol.skript.lang.Trigger.execute(Trigger.java:53)
[22:09:56] [Server thread/ERROR]: #!#!     at ch.njol.skript.events.EvtPeriodical.execute(EvtPeriodical.java:94)
[22:09:56] [Server thread/ERROR]: #!#!     at ch.njol.skript.events.EvtPeriodical$1.run(EvtPeriodical.java:120)
[22:09:56] [Server thread/ERROR]: #!#!     at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftTask.run(CraftTask.java:53)
[22:09:56] [Server thread/ERROR]: #!#!     at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
[22:09:56] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:587)
[22:09:56] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250)
[22:09:56] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545)
[22:09:56] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457)
[22:09:56] [Server thread/ERROR]: #!#!     at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617)
[22:09:56] [Server thread/ERROR]: #!#!
[22:09:56] [Server thread/ERROR]: #!#! Version Information:
[22:09:56] [Server thread/ERROR]: #!#!   Skript: 2.1.2
[22:09:56] [Server thread/ERROR]: #!#!   Bukkit: 1.7.2-R0.3
[22:09:56] [Server thread/ERROR]: #!#!   Minecraft: 1.7.2
[22:09:56] [Server thread/ERROR]: #!#!   Java: 1.7.0_80
[22:09:56] [Server thread/ERROR]: #!#!
[22:09:56] [Server thread/ERROR]: #!#! Running CraftBukkit: false
[22:09:56] [Server thread/ERROR]: #!#!
[22:09:56] [Server thread/ERROR]: #!#! Current node: null
[22:09:56] [Server thread/ERROR]: #!#! Current item: loop the blocks in radius 1 around (loop-creature >> ch.njol.skript.classes.data.DefaultConverters$10@2fcadc67: org.bukkit.entity.Creature->org.bukkit.Location)
[22:09:56] [Server thread/ERROR]: #!#!
[22:09:56] [Server thread/ERROR]: #!#! Thread: Server thread
[22:09:56] [Server thread/ERROR]: #!#!
[22:09:56] [Server thread/ERROR]: #!#! End of Error.
[22:09:56] [Server thread/ERROR]: #!#!

Kod:

every 1 second:
    loop all creatures:
        loop blocks in radius 1 of loop-creature:
            loop-block is water
            push loop-creature upward at speed 20

3 linijka jak kolwiek ją zmienie to wywala błędy (gdy potwór będzie za daleko to wraca na swój spawn tak zrobiłem zapisany w pluginie specjalnym) przy przeładowywaniu nie ma błędów i działa normalnie ,ale w konsoli są takie błędy.