Solved Archon Crates error???

Archon crates can't be enabled on my 1.9 server.

Code:

[11:17:59] [Server thread/INFO]: [ArchonCrates] Enabling ArchonCrates v17.3
[11:17:59] [Server thread/INFO]: [0;33;1m[9m[[0;33;22m[9m==================================================================================================[0;33;1m[9m][m
[11:17:59] [Server thread/INFO]:  [m
[11:17:59] [Server thread/INFO]: [0;37;22m[[0;32;1mArchonCrates[0;37;22m] [0;32;1mhas been enabled![m
[11:17:59] [Server thread/INFO]:  [m
[11:17:59] [Server thread/INFO]:   [0;33;1mUpdate Check:[m
[11:17:59] [Server thread/INFO]:  [m
[11:17:59] [Server thread/INFO]:      [0;31;1mThere is a new version of ArchonCrates out! ( 17.4)[m
[11:17:59] [Server thread/INFO]:      [0;37;22mYou can download it from here: [URL]http://dev.bukkit.org/bukkit-plugins/archoncrates/files/38-archon-crates-v17-4/[m[/URL]
[11:17:59] [Server thread/INFO]:  [m
[11:17:59] [Server thread/INFO]:   [0;33;1mVault API:[m
[11:17:59] [Server thread/INFO]:  [m
[11:17:59] [Server thread/INFO]:      [0;33;1mYou have Vault installed this will allow ArchonCrates to use the Economy system for[m
[11:17:59] [Server thread/INFO]:      [0;33;1mthe buy signs and also use the sub commands feature for the crate loot![m
[11:17:59] [Server thread/INFO]:  [m
[11:17:59] [Server thread/ERROR]: Error occurred while enabling ArchonCrates v17.3 (Is it up to date?)
java.lang.NoSuchMethodError: org.bukkit.Server.getOnlinePlayers()[Lorg/bukkit/entity/Player;
    at com.HamiStudios.ArchonCrates.Tasks.OnEnable.<init>(OnEnable.java:223) ~[?:?]
    at com.HamiStudios.ArchonCrates.Main.onEnable(Main.java:11) ~[?:?]
    at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:292) ~[craftbukkit.jar:git-Bukkit-8b69bdd]
    at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:332) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at org.bukkit.craftbukkit.v1_9_R1.CraftServer.loadPlugin(CraftServer.java:346) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at org.bukkit.craftbukkit.v1_9_R1.CraftServer.enablePlugins(CraftServer.java:318) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at net.minecraft.server.v1_9_R1.MinecraftServer.t(MinecraftServer.java:403) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at net.minecraft.server.v1_9_R1.MinecraftServer.l(MinecraftServer.java:368) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at net.minecraft.server.v1_9_R1.MinecraftServer.a(MinecraftServer.java:323) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at net.minecraft.server.v1_9_R1.DedicatedServer.init(DedicatedServer.java:241) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:506) [craftbukkit.jar:git-Bukkit-8b69bdd]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_74]

 

@timtower I tried to. I know it says to update it and they all are.

 

@timtower no I did not. How do I?

 

What bukkit/spigot version do you use?

 

@timtower I got it. There was a newer version that was unlisted. http://dev.bukkit.org/bukkit-plugins/archoncrates/files/38-archon-crates-v17-4/