gondus

The mod is computercraft, and that is a monitor. That should give you a good enough explanation on how to do it.

Title: NetherOres crashing my server Version: 3.0.3/3.0.4 OS: Ubuntu 11.10 Java Version: openjdk 7 Description of Problem: Server Runs only when mod_netherores.jar is removed. Error Messages: [sEVERE] java.lang.UnsupportedClassVersionError:net/minecraft/server/mod_NetherOres Unsupported major.minor version 51.0 Error Log: 20:31:34 [iNFO] Loading mods from /opt/tekkit/mods 20:31:34 [sEVERE] java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsuppo rted major.minor version 51.0 20:31:34 [sEVERE] at java.lang.ClassLoader.defineClass1(Native Method) 20:31:34 [sEVERE] at java.lang.ClassLoader.defineClass(ClassLoader.java:634) 20:31:34 [sEVERE] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) 20:31:34 [sEVERE] at java.net.URLClassLoader.defineClass(URLClassLoader.java:277) 20:31:34 [sEVERE] at java.net.URLClassLoader.access$000(URLClassLoader.java:73) 20:31:34 [sEVERE] at java.net.URLClassLoader$1.run(URLClassLoader.java:212) 20:31:34 [sEVERE] at java.security.AccessController.doPrivileged(Native Method) 20:31:34 [sEVERE] at java.net.URLClassLoader.findClass(URLClassLoader.java:205) 20:31:34 [sEVERE] at java.lang.ClassLoader.loadClass(ClassLoader.java:321) 20:31:34 [sEVERE] at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) 20:31:34 [sEVERE] at java.lang.ClassLoader.loadClass(ClassLoader.java:314) 20:31:34 [sEVERE] at java.lang.ClassLoader.loadClass(ClassLoader.java:266) 20:31:34 [sEVERE] at java.lang.Class.forName0(Native Method) 20:31:34 [sEVERE] at java.lang.Class.forName(Class.java:264) 20:31:34 [sEVERE] at cpw.mods.fml.common.Loader.loadModClass(Loader.java:440) 20:31:34 [sEVERE] at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.java:497) 20:31:34 [sEVERE] at cpw.mods.fml.common.Loader.load(Loader.java:375) 20:31:34 [sEVERE] at cpw.mods.fml.common.Loader.loadMods(Loader.java:527) 20:31:34 [sEVERE] at cpw.mods.fml.server.FMLBukkitHandler.onPreLoad(FMLBukkitHandler.java:113) 20:31:34 [sEVERE] at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:118) 20:31:34 [sEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426) 20:31:34 [sEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) 20:31:34 [sEVERE] Unexpected exception java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_NetherOres : Unsupported major.minor v ersion 51.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:634) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:277) at java.net.URLClassLoader.access$000(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:212) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:314) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at cpw.mods.fml.common.Loader.loadModClass(Loader.java:440) at cpw.mods.fml.common.Loader.attemptFileLoad(Loader.java:497) at cpw.mods.fml.common.Loader.load(Loader.java:375) at cpw.mods.fml.common.Loader.loadMods(Loader.java:527) at cpw.mods.fml.server.FMLBukkitHandler.onPreLoad(FMLBukkitHandler.java:113) at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:118) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:426) at net.minecraft.server.ThreadServerApplication.run(SourceFile:492) > 20:34:18 [iNFO] Stopping server 20:34:18 [sEVERE] java.lang.IndexOutOfBoundsException: Index: 0, Size: 0 20:34:18 [sEVERE] at java.util.ArrayList.rangeCheck(ArrayList.java:571) 20:34:18 [sEVERE] at java.util.ArrayList.get(ArrayList.java:349) 20:34:18 [sEVERE] at net.minecraft.server.MinecraftServer.stop(MinecraftServer.java:412) 20:34:18 [sEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:483) 20:34:18 [sEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)