Launcher Not starting properly!

[xXAmphibiaXx]

Title: Launcher Not starting properly!

Version: 3.1.2

OS: Windows Home Premium

Java Version: Version 7 Update 5

Description of Problem:

When I use the launcher it starts fine until it gets to the mods and then spams me with a load of severe warnings BUT when I use the .jar file named Tekkit it works fine. What I want to know is if anyone can help me fix the problem or confirm that the .jar method is ok to use. I have been directed to this page by numerous people and hopefully you all can help. Thanks for your time

Error Messages:

Error Log:

182 recipes

    27 achievements

    20:30:10 [iNFO] Starting minecraft server version 1.2.5

    20:30:10 [iNFO] Attempting early MinecraftForge initialization

    20:30:10 [iNFO] Completed early MinecraftForge initialization

    20:30:10 [iNFO] Forge Mod Loader version 2.2.91.173 for Minecraft 1.2.5 loading

    20:30:10 [iNFO] Loading mods from C:\Users\Leigh\Desktop\Tekkit\mods

    20:30:12 [WARNING] Failed to load mod class net/minecraft/server/mod_NetherOres.

    class in C:\Users\Leigh\Desktop\Tekkit\mods\mod_NetherOres.jar

    20:30:12 [sEVERE] Zip file mod_NetherOres.jar failed to read properly

    20:30:12 [iNFO] File mod_NetherOres.jar contained no mods

    20:30:12 [iNFO] Directory weaponmod contained no mods

    20:30:12 [sEVERE] A problem has occured during mod loading. Likely a corrupt jar

    is located in your mods directory

    20:30:12 [sEVERE] cpw.mods.fml.common.LoaderException: cpw.mods.fml.common.Loade

    rException: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_Net

    herOres : Unsupported major.minor version 51.0

    20:30:12 [sEVERE] at cpw.mods.fml.common.Loader.load(Loader.java:436)

    20:30:12 [sEVERE] at cpw.mods.fml.common.Loader.loadMods(Loader.java:606)

    20:30:12 [sEVERE] at cpw.mods.fml.server.FMLBukkitHandler.onPreLoad(FMLBuk

    kitHandler.java:134)

    20:30:12 [sEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftSe

    rver.java:135)

    20:30:12 [sEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftSer

    ver.java:438)

    20:30:12 [sEVERE] at net.minecraft.server.ThreadServerApplication.run(Sour

    ceFile:492)

    20:30:12 [sEVERE] Caused by: cpw.mods.fml.common.LoaderException: java.lang.Unsu

    pportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported majo

    r.minor version 51.0

    20:30:12 [sEVERE] at cpw.mods.fml.common.Loader.loadModClass(Loader.java:5

    27)

    20:30:12 [sEVERE] at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.jav

    a:562)

    20:30:12 [sEVERE] at cpw.mods.fml.common.Loader.load(Loader.java:419)

    20:30:12 [sEVERE] ... 5 more

    20:30:12 [sEVERE] Caused by: java.lang.UnsupportedClassVersionError: net/minecra

    ft/server/mod_NetherOres : Unsupported major.minor version 51.0

    20:30:12 [sEVERE] at java.lang.ClassLoader.defineClass1(Native Method)

    20:30:12 [sEVERE] at java.lang.ClassLoader.defineClassCond(Unknown Source)



    20:30:12 [sEVERE] at java.lang.ClassLoader.defineClass(Unknown Source)

    20:30:12 [sEVERE] at java.security.SecureClassLoader.defineClass(Unknown S

    ource)

    20:30:12 [sEVERE] at java.net.URLClassLoader.defineClass(Unknown Source)

    20:30:12 [sEVERE] at java.net.URLClassLoader.access$000(Unknown Source)

    20:30:12 [sEVERE] at java.net.URLClassLoader$1.run(Unknown Source)

    20:30:12 [sEVERE] at java.security.AccessController.doPrivileged(Native Me

    thod)

    20:30:12 [sEVERE] at java.net.URLClassLoader.findClass(Unknown Source)

    20:30:12 [sEVERE] at java.lang.ClassLoader.loadClass(Unknown Source)

    20:30:12 [sEVERE] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown So

    urce)

    20:30:12 [sEVERE] at java.lang.ClassLoader.loadClass(Unknown Source)

    20:30:12 [sEVERE] at java.lang.ClassLoader.loadClass(Unknown Source)

    20:30:12 [sEVERE] at java.lang.Class.forName0(Native Method)

    20:30:12 [sEVERE] at java.lang.Class.forName(Unknown Source)

    20:30:12 [sEVERE] at cpw.mods.fml.common.Loader.loadModClass(Loader.java:4

    94)

    20:30:12 [sEVERE] ... 7 more

    20:30:12 [sEVERE] Unexpected exception

    cpw.mods.fml.common.LoaderException: cpw.mods.fml.common.LoaderException: java.l

    ang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsuppor

    ted 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.UnsupportedClassVersio

    nError: 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_Neth

    erOres : 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

[xXAmphibiaXx]

Sorry for posting twice. It was unintentional and not spam. Thanks

[dvdbrander]

Unsupported majo

r.minor version 51.0

http://forums.technicpack.net/threads/mod_ic2advancedmachines-unsupported-major-minor-version-51-0.2324/

edit: nvm, that's about an way older version and you have already got j 7.5

[Torezu]

Nope, double-check your Java version, and make sure you don't have two of them. Java 7 almost always fixes this issue if properly installed and used.

[xXAmphibiaXx]

How do you find the different java files