Can somebody tell me what I'm doing wrong please.

[Pomarf]

[GUI]Starting bukkit server - min. RAM:128 max. RAM:1024

182 recipes

27 achievements

1:03:23 PM [iNFO] Starting minecraft server version 1.2.5

1:03:23 PM [iNFO] Attempting early MinecraftForge initialization

1:03:23 PM [iNFO] Completed early MinecraftForge initialization

1:03:23 PM [iNFO] Forge Mod Loader version 2.2.91.173 for Minecraft 1.2.5 loading

1:03:23 PM [iNFO] Loading mods from C:\Users\Nate\Desktop\Tekkit Server\mods

1:03:25 PM [WARNING] Failed to load mod class net/minecraft/server/mod_NetherOres.class in C:\Users\Nate\Desktop\Tekkit Server\mods\mod_NetherOres.jar

1:03:25 PM [sEVERE] Zip file mod_NetherOres.jar failed to read properly

1:03:25 PM [iNFO] File mod_NetherOres.jar contained no mods

1:03:25 PM [iNFO] Directory weaponmod contained no mods

1:03:25 PM [sEVERE] A problem has occured during mod loading. Likely a corrupt jar is located in your mods directory

1:03:25 PM [sEVERE] cpw.mods.fml.common.LoaderException: cpw.mods.fml.common.LoaderException: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0

1:03:25 PM [sEVERE]    at cpw.mods.fml.common.Loader.load(Loader.java:436)

1:03:26 PM [sEVERE]    at cpw.mods.fml.common.Loader.loadMods(Loader.java:606)

1:03:26 PM [sEVERE]    at cpw.mods.fml.server.FMLBukkitHandler.onPreLoad(FMLBukkitHandler.java:134)

1:03:26 PM [sEVERE]    at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:135)

1:03:26 PM [sEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

1:03:26 PM [sEVERE]    at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

1:03:26 PM [sEVERE] Caused by: cpw.mods.fml.common.LoaderException: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0

1:03:26 PM [sEVERE]    at cpw.mods.fml.common.Loader.loadModClass(Loader.java:527)

1:03:26 PM [sEVERE]    at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.java:562)

1:03:26 PM [sEVERE]    at cpw.mods.fml.common.Loader.load(Loader.java:419)

1:03:26 PM [sEVERE]    ... 5 more

1:03:26 PM [sEVERE] Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0

1:03:26 PM [sEVERE]    at java.lang.ClassLoader.defineClass1(Native Method)

1:03:26 PM [sEVERE]    at java.lang.ClassLoader.defineClassCond(Unknown Source)

1:03:26 PM [sEVERE]    at java.lang.ClassLoader.defineClass(Unknown Source)

1:03:26 PM [sEVERE]    at java.security.SecureClassLoader.defineClass(Unknown Source)

1:03:26 PM [sEVERE]    at java.net.URLClassLoader.defineClass(Unknown Source)

1:03:26 PM [sEVERE]    at java.net.URLClassLoader.access$000(Unknown Source)

1:03:26 PM [sEVERE]    at java.net.URLClassLoader$1.run(Unknown Source)

1:03:26 PM [sEVERE]    at java.security.AccessController.doPrivileged(Native Method)

1:03:26 PM [sEVERE]    at java.net.URLClassLoader.findClass(Unknown Source)

1:03:26 PM [sEVERE]    at java.lang.ClassLoader.loadClass(Unknown Source)

1:03:26 PM [sEVERE]    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

1:03:27 PM [sEVERE]    at java.lang.ClassLoader.loadClass(Unknown Source)

1:03:27 PM [sEVERE]    at java.lang.ClassLoader.loadClass(Unknown Source)

1:03:27 PM [sEVERE]    at java.lang.Class.forName0(Native Method)

1:03:27 PM [sEVERE]    at java.lang.Class.forName(Unknown Source)

1:03:27 PM [sEVERE]    at cpw.mods.fml.common.Loader.loadModClass(Loader.java:494)

1:03:27 PM [sEVERE]    ... 7 more

1:03:27 PM [sEVERE] Unexpected exception

cpw.mods.fml.common.LoaderException: cpw.mods.fml.common.LoaderException: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0

at cpw.mods.fml.common.Loader.load(Loader.java:436)

at cpw.mods.fml.common.Loader.loadMods(Loader.java:606)

at cpw.mods.fml.server.FMLBukkitHandler.onPreLoad(FMLBukkitHandler.java:134)

at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:135)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

Caused by: cpw.mods.fml.common.LoaderException: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0

at cpw.mods.fml.common.Loader.loadModClass(Loader.java:527)

at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.java:562)

at cpw.mods.fml.common.Loader.load(Loader.java:419)

... 5 more

Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0

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 java.lang.ClassLoader.loadClass(Unknown Source)

at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.ClassLoader.loadClass(Unknown Source)

at java.lang.Class.forName0(Native Method)

at java.lang.Class.forName(Unknown Source)

at cpw.mods.fml.common.Loader.loadModClass(Loader.java:494)

... 7 more

1:09:07 PM [iNFO] Stopping server

1:09:07 PM [sEVERE] java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

1:09:08 PM [sEVERE]    at java.util.ArrayList.RangeCheck(Unknown Source)

1:09:08 PM [sEVERE]    at java.util.ArrayList.get(Unknown Source)

1:09:08 PM [sEVERE]    at net.minecraft.server.MinecraftServer.stop(MinecraftServer.java:424)

1:09:08 PM [sEVERE]    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)

[GUI] The server has stopped...

[theprolo]

Try the Bugs forum, those guys know what that means. Looking at it a little though, I don't think all of the mods are there- try re-installing it?

[Wendo]

Search the error, specifically this

Unsupported major.minor version 51.0

[thesavage1]

delete netherores in the mods folder, thats your problem

[Jay?]

Can somebody tell me what i'm doing wrong?

You're posting in the SMP discussion board rather than the SMP bug board.