cant get my tekkit sever up after new update

[troxis]

getting this error

4:53:31 [iNFO] Starting minecraft server version 1.2.5 14:53:31 [iNFO] Attempting early MinecraftForge initialization 14:53:31 [iNFO] Completed early MinecraftForge initialization 14:53:31 [iNFO] Forge Mod Loader version 2.2.91.162 for Minecraft 1.2.5 loading 14:53:31 [iNFO] Loading mods from /Users/robertlucas/Desktop/TekkitServer/mods 14:53:31 [WARNING] Failed to load mod class net/minecraft/server/mod_NetherOres.class in /Users/robertlucas/Desktop/TekkitServer/mods/mod_NetherOres.jar 14:53:31 [sEVERE] Zip file mod_NetherOres.jar failed to read properly 14:53:31 [iNFO] File mod_NetherOres.jar contained no mods 14:53:31 [iNFO] Directory weaponmod contained no mods 14:53:31 [sEVERE] A problem has occured during mod loading. Likely a corrupt jar is located in your mods directory 14:53:31 [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 14:53:31 [sEVERE] at cpw.mods.fml.common.Loader.load(Loader.java:436) 14:53:31 [sEVERE] at cpw.mods.fml.common.Loader.loadMods(Loader.java:606) 14:53:31 [sEVERE] at cpw.mods.fml.server.FMLBukkitHandler.onPreLoad(FMLBukkitHandler.java:134) 14:53:31 [sEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:135) 14:53:31 [sEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438) 14:53:31 [sEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) 14:53:31 [sEVERE] Caused by: cpw.mods.fml.common.LoaderException: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0 14:53:31 [sEVERE] at cpw.mods.fml.common.Loader.loadModClass(Loader.java:527) 14:53:31 [sEVERE] at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.java:562) 14:53:31 [sEVERE] at cpw.mods.fml.common.Loader.load(Loader.java:419) 14:53:31 [sEVERE] ... 5 more 14:53:31 [sEVERE] Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0 14:53:31 [sEVERE] at java.lang.ClassLoader.defineClass1(Native Method) 14:53:31 [sEVERE] at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) 14:53:31 [sEVERE] at java.lang.ClassLoader.defineClass(ClassLoader.java:615) 14:53:31 [sEVERE] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) 14:53:31 [sEVERE] at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) 14:53:31 [sEVERE] at java.net.URLClassLoader.access$000(URLClassLoader.java:58) 14:53:31 [sEVERE] at java.net.URLClassLoader$1.run(URLClassLoader.java:197) 14:53:31 [sEVERE] at java.security.AccessController.doPrivileged(Native Method) 14:53:31 [sEVERE] at java.net.URLClassLoader.findClass(URLClassLoader.java:190) 14:53:31 [sEVERE] at java.lang.ClassLoader.loadClass(ClassLoader.java:306) 14:53:31 [sEVERE] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) 14:53:31 [sEVERE] at java.lang.ClassLoader.loadClass(ClassLoader.java:295) 14:53:31 [sEVERE] at java.lang.ClassLoader.loadClass(ClassLoader.java:247) 14:53:31 [sEVERE] at java.lang.Class.forName0(Native Method) 14:53:31 [sEVERE] at java.lang.Class.forName(Class.java:247) 14:53:31 [sEVERE] at cpw.mods.fml.common.Loader.loadModClass(Loader.java:494) 14:53:31 [sEVERE] ... 7 more 14:53:31 [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(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:295) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at cpw.mods.fml.common.Loader.loadModClass(Loader.java:494) ... 7 more >

[Torezu]

Aaaahhh! Wall of text I don't want to bother to read!

Go submit a bug report, since I'm assuming you really don't know how to use the search bar for this really common error.