Need Help with essentials

I have a butkkit server on a mac running osx 10.5.8, and evert time i try to install essentials the console shows this:

rt_server.command ; exit;
182 recipes
27 achievements
07:53:03 [INFO] Starting minecraft server version 1.2.5
07:53:03 [INFO] Loading properties
07:53:03 [INFO] Starting Minecraft server on *:25565
07:53:03 [INFO] This server is running CraftBukkit version git-Bukkit-1.2.5-R4.0-b2222jnks (MC: 1.2.5) (Implementing API version 1.2.5-R4.0)
07:53:04 [SEVERE] Could not load 'plugins/Essentials.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: Bad version number in .class file
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:151)
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:213)
at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:189)
at net.minecraft.server.ServerConfigurationManager.<init>(ServerConfigurationManager.java:53)
at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:166)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:432)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:676)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:41)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
at java.lang.ClassLoader.loadClass(ClassLoader.java:317)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:375)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:140)
... 8 more
07:53:04 [SEVERE] Could not load 'plugins/EssentialsSpawn.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: Essentials
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:195)
at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:213)
at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:189)
at net.minecraft.server.ServerConfigurationManager.<init>(ServerConfigurationManager.java:53)
at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:166)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:432)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
07:53:04 [SEVERE] Could not load 'plugins/EssentialsProtect.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: Bad version number in .class file
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:151)
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305)
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:213)
at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:189)
at net.minecraft.server.ServerConfigurationManager.<init>(ServerConfigurationManager.java:53)
at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:166)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:432)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:676)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:41)
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:29)
at java.lang.ClassLoader.loadClass(ClassLoader.java:317)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:375)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:140)
... 8 more
07:53:04 [SEVERE] Could not load 'plugins/EssentialsChat.jar' in folder 'plugins'
org.bukkit.plugin.UnknownDependencyException: Essentials
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:195)
at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:213)
at org.bukkit.craftbukkit.CraftServer.<init>(CraftServer.java:189)
at net.minecraft.server.ServerConfigurationManager.<init>(ServerConfigurationManager.java:53)
at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:166)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:432)
at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
07:53:04 [INFO] Preparing level "world"
07:53:04 [INFO] Default game type: 0
07:53:05 [INFO] Preparing start region for level 0 (Seed: -3438139501238585289)
07:53:06 [INFO] Preparing spawn area: 36%
07:53:07 [INFO] Preparing spawn area: 93%
07:53:07 [INFO] Preparing start region for level 1 (Seed: 4546708462143628673)
07:53:08 [INFO] Preparing spawn area: 28%
07:53:09 [INFO] Preparing spawn area: 77%
07:53:09 [INFO] Preparing start region for level 2 (Seed: 4546708462143628673)
07:53:10 [INFO] Preparing spawn area: 56%
07:53:10 [INFO] Server permissions file permissions.yml is empty, ignoring it
07:53:10 [INFO] Done (6.435s)! For help, type "help" or "?"

I have restarted it several times, and when i type in /plugins it says (0):

I NEED HELP please answer. Thanks

 

Which version of Essentials are you using?

 

2.9.1

 

There's your problem. That's an old version of Essentials, meant for R1.0.

Try http://dev.bukkit.org/server-mods/essentials/files/148-essentials-pre2-9-2-4/

 

same thing

 

Ok try deleting all Essentials plugins and restarting. If you don't have the error with any other plugins, try these versions of Essentials.

 

I will try it

 

same error