Rzeczywiście, addonu nie miałem. Teraz to wszystko zrobiłem, niby ok, błędu nie wywala. Jednak praktycznie nic się nie dzieje raz na jakiś czas pojawi się ten efekt potki. Error za to pojawia się w konsoli : [18:10:21 ERROR]: #!#! [skript] Severe Error:[18:10:21 ERROR]: #!#! [18:10:21 ERROR]: #!#! If you're developing an add-on for Skript this likely means that you have done something wrong.[18:10:21 ERROR]: #!#! If you're a server admin however please go to http://dev.bukkit.org/server-mods/skript/tickets/[18:10:21 ERROR]: #!#! and check whether this error has already been reported.[18:10:21 ERROR]: #!#! If not please create a new ticket with a meaningful title, copy & paste this whole error into it,[18:10:21 ERROR]: #!#! and describe what you did before it happened and/or what you think caused the error.[18:10:21 ERROR]: #!#! If you think that it's a trigger that's causing the error please post the trigger as well.[18:10:21 ERROR]: #!#! By following this guide fixing the error should be easy and done fast.[18:10:21 ERROR]: #!#! [18:10:21 ERROR]: #!#! Stack trace:[18:10:21 ERROR]: #!#! java.lang.IllegalArgumentException: Wrong kind of data for this effect![18:10:21 ERROR]: #!#! at org.apache.commons.lang.Validate.isTrue(Validate.java:136)[18:10:21 ERROR]: #!#! at org.bukkit.craftbukkit.v1_7_R4.CraftWorld.playEffect(CraftWorld.java:808)[18:10:21 ERROR]: #!#! at org.bukkit.craftbukkit.v1_7_R4.CraftWorld.playEffect(CraftWorld.java:803)[18:10:21 ERROR]: #!#! at ch.njol.skript.util.VisualEffect.play(VisualEffect.java:183)[18:10:21 ERROR]: #!#! at ch.njol.skript.effects.EffVisualEffect.execute(EffVisualEffect.java:108)[18:10:21 ERROR]: #!#! at ch.njol.skript.lang.Effect.run(Effect.java:50)[18:10:21 ERROR]: #!#! at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:63)[18:10:21 ERROR]: #!#! at ch.njol.skript.lang.TriggerItem.walk(TriggerItem.java:91)[18:10:21 ERROR]: #!#! at ch.njol.skript.lang.Trigger.execute(Trigger.java:53)[18:10:21 ERROR]: #!#! at ch.njol.skript.SkriptEventHandler.check(SkriptEventHandler.java:149)[18:10:21 ERROR]: #!#! at ch.njol.skript.SkriptEventHandler$1.execute(SkriptEventHandler.java:109)[18:10:21 ERROR]: #!#! at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)[18:10:21 ERROR]: #!#! at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)[18:10:21 ERROR]: #!#! at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:249)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.PacketPlayInFlying.a(SourceFile:137)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.PacketPlayInLook.handle(SourceFile:98)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:184)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:81)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:731)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490)[18:10:21 ERROR]: #!#! at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628)[18:10:21 ERROR]: #!#! [18:10:21 ERROR]: #!#! Version Information:[18:10:21 ERROR]: #!#! Skript: 2.1.2[18:10:21 ERROR]: #!#! Bukkit: 1.7.10-R0.1-SNAPSHOT[18:10:21 ERROR]: #!#! Minecraft: 1.7.10[18:10:21 ERROR]: #!#! Java: 1.7.0_55[18:10:21 ERROR]: #!#! [18:10:21 ERROR]: #!#! Running CraftBukkit: false[18:10:21 ERROR]: #!#! [18:10:21 ERROR]: #!#! Current node: null[18:10:21 ERROR]: #!#! Current item: play [[visualeffect:potion break]] at the location of (the player >ch.njol.skript.classes.data.DefaultConverters$10@1ce59b1e: org.bukkit.entity.Player->org.bukkit.Location)[18:10:21 ERROR]: #!#! [18:10:21 ERROR]: #!#! Thread: Server thread[18:10:21 ERROR]: #!#! [18:10:21 ERROR]: #!#! End of Error.[18:10:21 ERROR]: #!#! Efekty ender signal, mobspawner flames działają normalnie