Tekkit Server 3.1.2 fails with Java Exception

[Jeuke]

I've search through 6 pages of forums post and can't find anyone getting this same message when trying to launch the Tekkit Server 3.1.2. Does anyone know how to fix this? I've tried:

Update the Tekkit 3.0.4 folder with 3.1.2

Create a New Folder for just 3.1.2

rename the %appdata%/.techniclauncher folder (don't think this is for server)

Removed the above folder

installed in a new directory

rebooted

Anyone know what I need to do to get it to open the .jar mod files?

D:\Minecraft\Technic 1.0\Tekkit>java -Xmx3G -Xms2G -jar Tekkit.jar nogui

182 recipes

27 achievements

19:36:13 [iNFO] Starting minecraft server version 1.2.5

19:36:14 [iNFO] Attempting early MinecraftForge initialization

19:36:14 [iNFO] Completed early MinecraftForge initialization

19:36:14 [iNFO] Forge Mod Loader version 2.2.91.173 for Minecraft 1.2.5 loading

19:36:14 [iNFO] Loading mods from D:\Minecraft\Technic 1.0\Tekkit\mods

19:36:14 [WARNING] Failed to load mod class net/minecraft/server/mod_NetherOres.class in D:\Minecraft\Technic 1.0\Tekkit\mods\mod_NetherOres.jar

19:36:14 [sEVERE] Zip file mod_NetherOres.jar failed to read properly

19:36:14 [iNFO] File mod_NetherOres.jar contained no mods

19:36:14 [iNFO] Directory weaponmod contained no mods

19:36:14 [sEVERE] A problem has occured during mod loading. Likely a corrupt jar is located in your mods directory

19:36:14 [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

19:36:14 [sEVERE] at cpw.mods.fml.common.Loader.load(Loader.java:436)

19:36:14 [sEVERE] at cpw.mods.fml.common.Loader.loadMods(Loader.java:606)

19:36:14 [sEVERE] at cpw.mods.fml.server.FMLBukkitHandler.onPreLoad(FMLBukkitHandler.java:134)

19:36:14 [sEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:135)

19:36:14 [sEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:438)

19:36:14 [sEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

19:36:14 [sEVERE] Caused by: cpw.mods.fml.common.LoaderException: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor ve

rsion 51.0

19:36:14 [sEVERE] at cpw.mods.fml.common.Loader.loadModClass(Loader.java:527)

19:36:14 [sEVERE] at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.java:562)

19:36:14 [sEVERE] at cpw.mods.fml.common.Loader.load(Loader.java:419)

19:36:14 [sEVERE] ... 5 more

19:36:14 [sEVERE] Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor version 51.0

19:36:14 [sEVERE] at java.lang.ClassLoader.defineClass1(Native Method)

19:36:14 [sEVERE] at java.lang.ClassLoader.defineClassCond(Unknown Source)

19:36:14 [sEVERE] at java.lang.ClassLoader.defineClass(Unknown Source)

19:36:14 [sEVERE] at java.security.SecureClassLoader.defineClass(Unknown Source)

19:36:14 [sEVERE] at java.net.URLClassLoader.defineClass(Unknown Source)

19:36:14 [sEVERE] at java.net.URLClassLoader.access$000(Unknown Source)

19:36:14 [sEVERE] at java.net.URLClassLoader$1.run(Unknown Source)

19:36:14 [sEVERE] at java.security.AccessController.doPrivileged(Native Method)

19:36:14 [sEVERE] at java.net.URLClassLoader.findClass(Unknown Source)

19:36:14 [sEVERE] at java.lang.ClassLoader.loadClass(Unknown Source)

19:36:14 [sEVERE] at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

19:36:14 [sEVERE] at java.lang.ClassLoader.loadClass(Unknown Source)

19:36:14 [sEVERE] at java.lang.ClassLoader.loadClass(Unknown Source)

19:36:14 [sEVERE] at java.lang.Class.forName0(Native Method)

19:36:14 [sEVERE] at java.lang.Class.forName(Unknown Source)

19:36:14 [sEVERE] at cpw.mods.fml.common.Loader.loadModClass(Loader.java:494)

19:36:14 [sEVERE] ... 7 more

19:36:14 [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

>

[ch_blank]

I'm getting the exact same thing. No idea how to fix.

Anyone know how to fix this?

[Torezu]

I'm getting the exact same thing. No idea how to fix.

Anyone know how to fix this?

We get at least 10 of these a day. I may be exaggerating, but not by much. Update your server to Java 7.

[Jeuke]

I figured you did is which why I mentioned I searched for them and couldn't find one. Maybe we could put this kind of thing is a troubleshooting guide. I.e.

First step: Update Java to latest build - if that doesn't work go to next step

Next Step: Do something else

I've updated Java, rebooted, installed Tekkit Server into a new directory and still getting this error

If my search for solutions is off please let me know what I should be looking for. I'm using: Tekkit Server 3.1.2 Java error and found nothing

[Torezu]

Two questions:

1) Did you remove older versions of Java, before or after updating? Java doesn't do that automatically.

2) Do you really care about Nether Ores? Some people do, some don't. If you don't, just delete the nether_Ores.jar or whatever it's called from your server's mods folder. Voila!

[Jeuke]

I did not remove the old Java, I'll do that tonight. Thanks

I'll have to check with my other players and see if the Nether Ores are needed

[Charmizard123]

Can someone help me please! I cant update tekkit classic 1.3.2 to 1.3.3 for some reason. Because when I try to update it through the launcher to the latest version it asks me if I want to update this pack so I say yes and it updates.

But when its finished I try to load it and it just says that minecraft has crashed and the only way I can play it again is if I set it to 1.3.2. this is really bugging me so if someone knows why this Is happening can you please tell me why and how I can fix it? Thanks!

[Charmizard123]

Soz I meant 3.1.2 to 3.1.3