I know there have been a lot of threads about this (ive been searching for answers to my problem) but the threads i have seen are from developers and this got something to do with compiling. Now i'm not a plugin developer and i get this error for Mini-SkyBlock and MCPCPlusXNmsBlock_147, how can i fix this? Using latest recommended Bukkit build. Errors: MCPCPlusXNmsBlock_147 (I have no idea what this is, can anyone explain?) Code: 2013-02-08 17:16:55 [SEVERE] java.lang.UnsupportedClassVersionError: MCPCPlusXNmsBlock_147 : Unsupported major.minor version 51.0 2013-02-08 17:16:55 [SEVERE] at java.lang.ClassLoader.defineClass1(Native Method) 2013-02-08 17:16:55 [SEVERE] at java.lang.ClassLoader.defineClass(ClassLoader.java:634) 2013-02-08 17:16:55 [SEVERE] at java.lang.ClassLoader.defineClass(ClassLoader.java:480) 2013-02-08 17:16:55 [SEVERE] at com.sk89q.worldedit.bukkit.BukkitWorld$NmsBlockClassLoader.loadClass(BukkitWorld.java:228) 2013-02-08 17:16:55 [SEVERE] at com.sk89q.worldedit.bukkit.BukkitWorld.<init>(BukkitWorld.java:146) 2013-02-08 17:16:55 [SEVERE] at com.sk89q.worldedit.bukkit.BukkitUtil.getLocalWorld(BukkitUtil.java:50) 2013-02-08 17:16:55 [SEVERE] at com.sk89q.worldedit.bukkit.BukkitPlayer.getWorld(BukkitPlayer.java:132) 2013-02-08 17:16:55 [SEVERE] at com.sk89q.worldedit.bukkit.WorldEditListener.onPlayerInteract(WorldEditListener.java:121) 2013-02-08 17:16:55 [SEVERE] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 2013-02-08 17:16:55 [SEVERE] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 2013-02-08 17:16:55 [SEVERE] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 2013-02-08 17:16:55 [SEVERE] at java.lang.reflect.Method.invoke(Method.java:616) 2013-02-08 17:16:55 [SEVERE] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425) 2013-02-08 17:16:55 [SEVERE] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) 2013-02-08 17:16:55 [SEVERE] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477) 2013-02-08 17:16:55 [SEVERE] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462) 2013-02-08 17:16:55 [SEVERE] at org.bukkit.craftbukkit.v1_4_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:178) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.PlayerInteractManager.dig(PlayerInteractManager.java:114) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.PlayerConnection.a(PlayerConnection.java:564) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.Packet14BlockDig.handle(SourceFile:46) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.NetworkManager.b(NetworkManager.java:290) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.PlayerConnection.d(PlayerConnection.java:113) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.ServerConnection.b(SourceFile:39) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.DedicatedServerConnection.b(SourceFile:30) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.MinecraftServer.r(MinecraftServer.java:598) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.DedicatedServer.r(DedicatedServer.java:224) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.MinecraftServer.q(MinecraftServer.java:494) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:427) 2013-02-08 17:16:55 [SEVERE] at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849) and Mini-Skyblock Code: 2013-02-08 17:16:04 [SEVERE] Could not load 'plugins/Mini-SkyBlock_v0.2.jar' in folder 'plugins' org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: me/minecraftreagan/sb/skySMP : Unsupported major.minor version 51.0 at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:184) at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:305) at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230) at org.bukkit.craftbukkit.v1_4_R1.CraftServer.loadPlugins(CraftServer.java:239) at org.bukkit.craftbukkit.v1_4_R1.CraftServer.<init>(CraftServer.java:217) at net.minecraft.server.v1_4_R1.PlayerList.<init>(PlayerList.java:55) at net.minecraft.server.v1_4_R1.DedicatedPlayerList.<init>(SourceFile:11) at net.minecraft.server.v1_4_R1.DedicatedServer.init(DedicatedServer.java:104) at net.minecraft.server.v1_4_R1.MinecraftServer.run(MinecraftServer.java:399) at net.minecraft.server.v1_4_R1.ThreadServerApplication.run(SourceFile:849) Caused by: java.lang.UnsupportedClassVersionError: me/minecraftreagan/sb/skySMP : Unsupported major.minor version 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 org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:80) at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53) at java.lang.ClassLoader.loadClass(ClassLoader.java:321) at java.lang.ClassLoader.loadClass(ClassLoader.java:266) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:173) ... 9 more
Weird... Cuz: java version "1.7.0_05" Java(TM) SE Runtime Environment (build 1.7.0_05-b06) Java HotSpot(TM) 64-Bit Server VM (build 23.1-b03, mixed mode) Or am i supposed to update some kind of library the minecraft server is using?
I'm running the server on a dedicated server so using PuTTY console to start the server and i use this command line: java -Xmn2048M -Xincgc -Xmx1024M -jar craftbukkit.jar nogui
java version "1.7.0_05" Java(TM) SE Runtime Environment (build 1.7.0_05-b06) Java HotSpot(TM) 64-Bit Server VM (build 23.1-b03, mixed mode) Should be good, no?
Should be good. Try doing as orange451 said (although I doubt that will make a difference) and if that still doesn't work, contact the makers of those plugins.
It will make a difference, I've dealt with my fair share of these "Unsupported major.minor version 51.0" errors