naruto8544 Posted March 12, 2012 Posted March 12, 2012 I have already successfully ran a 2.0 Tekkit server but am disappointed that every time i attempt to run a 2.1.1 server I get the following error: >Failed to load mod from "mod_IC2AdvancedMachines.class" >java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2AdvancedMac hines : 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 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) 09:51:44 [sEVERE] Unexpected exception java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2AdvancedMach ines : 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 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) >java.lang.RuntimeException: Exception occured in ModLoader at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292) at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297) at net.minecraft.server.ModLoader.addMod(ModLoader.java:193) 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) Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2A dvancedMachines : 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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172) ... 6 more 09:51:44 [sEVERE] Unexpected exception java.lang.RuntimeException: Exception occured in ModLoader at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292) at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297) at net.minecraft.server.ModLoader.addMod(ModLoader.java:193) 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) Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2A dvancedMachines : 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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172) ... 6 more >java.lang.RuntimeException: ModLoader has failed to initialize. at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292) at net.minecraft.server.ModLoader.init(ModLoader.java:715) 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) Caused by: java.lang.RuntimeException: Exception occured in ModLoader at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292) at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297) at net.minecraft.server.ModLoader.addMod(ModLoader.java:193) at net.minecraft.server.ModLoader.readFromModFolder(ModLoader.java:929) at net.minecraft.server.ModLoader.init(ModLoader.java:683) ... 4 more Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2A dvancedMachines : 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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172) ... 6 more 09:51:44 [sEVERE] Unexpected exception java.lang.RuntimeException: ModLoader has failed to initialize. at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292) at net.minecraft.server.ModLoader.init(ModLoader.java:715) 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) Caused by: java.lang.RuntimeException: Exception occured in ModLoader at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292) at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297) at net.minecraft.server.ModLoader.addMod(ModLoader.java:193) at net.minecraft.server.ModLoader.readFromModFolder(ModLoader.java:929) at net.minecraft.server.ModLoader.init(ModLoader.java:683) ... 4 more Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2A dvancedMachines : 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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172) ... 6 more I have already redownloaded the entire server file and tried running a completely new world instead of getting a 2.0 one to work. I even updated Java cause I'm a noob to this stuff. :-[ Any help will be appreciated, I'll continue in 2.0 for the time being. Quote
0 Kmartinator Posted March 12, 2012 Posted March 12, 2012 Seems that you, sir/madam, should check out the helpful stickies. There, you will find the right information for any occasion! Quote
0 kyneff Posted March 12, 2012 Posted March 12, 2012 http://forums.technicpack.net/index.php/topic,2797.0.html Quote
Question
naruto8544
I have already successfully ran a 2.0 Tekkit server but am disappointed that every time i attempt to run a 2.1.1 server I get the following error:
>Failed to load mod from "mod_IC2AdvancedMachines.class"
>java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2AdvancedMac
hines : 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 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)
09:51:44 [sEVERE] Unexpected exception
java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2AdvancedMach
ines : 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 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)
>java.lang.RuntimeException: Exception occured in ModLoader
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292)
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297)
at net.minecraft.server.ModLoader.addMod(ModLoader.java:193)
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)
Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2A
dvancedMachines : 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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172)
... 6 more
09:51:44 [sEVERE] Unexpected exception
java.lang.RuntimeException: Exception occured in ModLoader
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292)
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297)
at net.minecraft.server.ModLoader.addMod(ModLoader.java:193)
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)
Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2A
dvancedMachines : 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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172)
... 6 more
>java.lang.RuntimeException: ModLoader has failed to initialize.
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292)
at net.minecraft.server.ModLoader.init(ModLoader.java:715)
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)
Caused by: java.lang.RuntimeException: Exception occured in ModLoader
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292)
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297)
at net.minecraft.server.ModLoader.addMod(ModLoader.java:193)
at net.minecraft.server.ModLoader.readFromModFolder(ModLoader.java:929)
at net.minecraft.server.ModLoader.init(ModLoader.java:683)
... 4 more
Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2A
dvancedMachines : 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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172)
... 6 more
09:51:44 [sEVERE] Unexpected exception
java.lang.RuntimeException: ModLoader has failed to initialize.
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292)
at net.minecraft.server.ModLoader.init(ModLoader.java:715)
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)
Caused by: java.lang.RuntimeException: Exception occured in ModLoader
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292)
at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297)
at net.minecraft.server.ModLoader.addMod(ModLoader.java:193)
at net.minecraft.server.ModLoader.readFromModFolder(ModLoader.java:929)
at net.minecraft.server.ModLoader.init(ModLoader.java:683)
... 4 more
Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2A
dvancedMachines : 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 net.minecraft.server.ModLoader.addMod(ModLoader.java:172)
... 6 more
I have already redownloaded the entire server file and tried running a completely new world instead of getting a 2.0 one to work.
I even updated Java cause I'm a noob to this stuff. :-[
Any help will be appreciated, I'll continue in 2.0 for the time being.
3 answers to this question
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