Factions fatal lag :(

This is my lag:

[SEVERE] Could not load 'plugins\Factions.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: org/bukkit/event/player/PlayerListener
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:182)
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
at org.bukkit.craftbukkit.v1_5_R2.CraftServer.loadPlugins(CraftServer.java:239)
at org.bukkit.craftbukkit.v1_5_R2.CraftServer.reload(CraftServer.java:603)
at org.bukkit.Bukkit.reload(Bukkit.java:184)
at org.bukkit.command.defaults.ReloadCommand.execute(ReloadCommand.java:23)
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:188)
at org.bukkit.craftbukkit.v1_5_R2.CraftServer.dispatchCommand(CraftServer.java:523)
at org.bukkit.craftbukkit.v1_5_R2.CraftServer.dispatchServerCommand(CraftServer.java:512)
at net.minecraft.server.v1_5_R2.DedicatedServer.am(DedicatedServer.java:261)
at net.minecraft.server.v1_5_R2.DedicatedServer.r(DedicatedServer.java:226)
at net.minecraft.server.v1_5_R2.MinecraftServer.q(MinecraftServer.java:474)
at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:407)
at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NoClassDefFoundError: org/bukkit/event/player/PlayerListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:80)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at com.massivecraft.factions.Factions.<init>(Factions.java:54)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:178)
... 14 more
Caused by: java.lang.ClassNotFoundException: org.bukkit.event.player.PlayerListener
at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:70)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 33 more

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WHAT THE *UCK? PLEASE HELP!
I got bukkit 1.5.0-BETA,
Factions 1.5.

 

why is about an year old factions version is used?

 

Please give me link for download version 1.5.1

 

google "bukkit factions plugin"

 

Also its Log not Lag.

 

OK! PLEASE LINK!

 

if you cant spend 1 minute to google even though i already gave you what to search, then you shouldnt manage a server.

 

...
http://dev.bukkit.org/server-mods/factions/
In original site of this plugin I cant find this in version 1.5.1 -,-

 

download latest.

 

Not working...

 

Because that statement only really helps us.[/sarcasm]

If you really need to be spoonfed, here.