Server help

[X54321]

I'm trying to set up a Tekkit server, but when I open the launcher it keeps saying : Failed to load mod from "mod_IC2AdvancedMachines.class"

2012-04-01 18:07:28 [FINER] THROW

java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2AdvancedMachines : Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172)

at net.minecraft.server.ModLoader.readFromModFolder(ModLoader.java:929)

at net.minecraft.server.ModLoader.init(ModLoader.java:683)

at net.minecraft.server.ModLoader.Init(ModLoader.java:1357)

at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:102)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:411)

at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

2012-04-01 18:07:28 [sEVERE] Unexpected exception

java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2AdvancedMachines : Unsupported major.minor version 51.0

at java.lang.ClassLoader.defineClass1(Native Method)

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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172)

at net.minecraft.server.ModLoader.readFromModFolder(ModLoader.java:929)

at net.minecraft.server.ModLoader.init(ModLoader.java:683)

at net.minecraft.server.ModLoader.Init(ModLoader.java:1357)

at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:102)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:411)

at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

Help?

[Xnodas]

I am getting the same message

[Synthetica]

Post it in the bug board?

[Oldtimeminer]

Just delete advmachines until you find a fix.

[Xnodas]

Just delete advmachines until you find a fix.

This works. Although I don't know what is in the advanced machines mod so I don't want to start up a server with a bunch of things missing from it.

[Zath137]

Go into the "Config" file and find "Modloader.cfg" open it with some editing software (I use Notepad++) and then find "IC2AdvanedMachines=on" and change it to "off". Then it should work fine!

Hope this helped!

[Xnodas]

Go into the "Config" file and find "Modloader.cfg" open it with some editing software (I use Notepad++) and then find "IC2AdvanedMachines=on" and change it to "off". Then it should work fine!

Hope this helped!

This won't fix the issue. This is the same as just removing Advmachines since it won't be loaded into the server. I'd rather have it fixed and be able to use it so I don't have to have me and my friends starting over

[Jay?]

Hey buckaroo, you need to slap a bug report format on that varmint 'fore anyone can wrangle it fer ya!

[Razacx]

You haven't got the latest java version,

you can download it here: http://www.oracle.com/technetwork/java/javase/downloads/index.html

I also strongly recommend you to uninstall all other versions of java that you have got on your computer (If you don't do this then you can edit your path enviroment variable to the new java version)

[Xnodas]

You haven't got the latest java version,

you can download it here: http://www.oracle.com/technetwork/java/javase/downloads/index.html

I also strongly recommend you to uninstall all other versions of java that you have got on your computer (If you don't do this then you can edit your path enviroment variable to the new java version)

Thank you very much. That did the trick.