Bukkit

@Atom360

And I have exactly the same problem as well

Mcore is up to date btw (i dont think its the problem) but i get this error: [20:45:07] [Server thread/ERROR]: Error occurred while enabling mcore v7.2.1 (Is it up to date?) java.lang.NullPointerException at com.massivecraft.mcore.util.IdUtil.loadDatas(IdUtil.java:793) [?:?] at com.massivecraft.mcore.util.IdUtil.setup(IdUtil.java:352) [?:?] at com.massivecraft.mcore.MCore.onEnable(MCore.java:157) [?:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:324) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:404) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugin(CraftServer.java:446) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.enablePlugins(CraftServer.java:380) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.<init>(CraftServer.java:318) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at net.minecraft.server.v1_7_R3.PlayerList.<init>(PlayerList.java:68) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at net.minecraft.server.v1_7_R3.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:126) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:436) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks] at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-10-g8688bd4-b3092jnks]

MrAlpha188 it really works i just did it and holy crap I'm happy as hell!!

I got an error... http://pastebin.com/v5G7jUwB

The error starts with this:
[18:15:41 ERROR]: Could not load 'plugins/mcore.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException java.lang.NoClassDefFoundError net/minecraft/server/v1_7_R3/PlayerInventory...

There is more on the paste bin...

Please Help

Note: I'm running Spigot version git-Spigot-1493 (1.7.9), and I got the latest version of the plugin

@Hamcheese99

I have the same error when loading Mcore.

@TheLeoComplex

I'm running my server on a Machintosh and I don't want to install anything in my computer. Is this the only way to make it working? Can I do something else? Please, help me! If it can be useful, i'm running Java 7 update 60. Thanks.

Ok I havent run my faction server in a while and can't figure out how to display the faction you are a member of in the chat. I thought it just worked before.

@MinecraftPhilippines

Rename your plugins/mcore/idnamecache.json file to something else then start the server again. MCore will generate a new copy of the file.

Seems like this file is getting messed up for some people on server crash/restart.

My MCORE is up to date but it still shows this.

[19:23:27] [Server thread/ERROR]: Error occurred while enabling mcore v7.2.1 (Is it up to date?) com.massivecraft.mcore.xlib.gson.JsonSyntaxException: java.io.EOFException: End of input at line 368 column 2 at com.massivecraft.mcore.xlib.gson.Gson.fromJson(Gson.java:782) [?:?] at com.massivecraft.mcore.xlib.gson.Gson.fromJson(Gson.java:739) [?:?] at com.massivecraft.mcore.xlib.gson.Gson.fromJson(Gson.java:688) [?:?] at com.massivecraft.mcore.util.IdUtil.getCachefileDatas(IdUtil.java:851) [?:?] at com.massivecraft.mcore.util.IdUtil.loadDatas(IdUtil.java:793) [?:?] at com.massivecraft.mcore.util.IdUtil.setup(IdUtil.java:352) [?:?] at com.massivecraft.mcore.MCore.onEnable(MCore.java:157) [?:?] at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:316) [cj.jar:git-Spigot-1487] at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:324) [cj.jar:git-Spigot-1487] at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:405) [cj.jar:git-Spigot-1487] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugin(CraftServer.java:465) [cj.jar:git-Spigot-1487] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.enablePlugins(CraftServer.java:383) [cj.jar:git-Spigot-1487] at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:136) [cj.jar:git-Spigot-1487] at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:457) [cj.jar:git-Spigot-1487] at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [cj.jar:git-Spigot-1487] Caused by: java.io.EOFException: End of input at line 368 column 2 at com.massivecraft.mcore.xlib.gson.stream.JsonReader.nextNonWhitespace(JsonReader.java:949) [?:?] at com.massivecraft.mcore.xlib.gson.stream.JsonReader.nextInObject(JsonReader.java:712) [?:?] at com.massivecraft.mcore.xlib.gson.stream.JsonReader.peek(JsonReader.java:384) [?:?] at com.massivecraft.mcore.xlib.gson.stream.JsonReader.hasNext(JsonReader.java:355) [?:?] at com.massivecraft.mcore.xlib.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:172) [?:?] at com.massivecraft.mcore.xlib.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:42) [?:?] at com.massivecraft.mcore.xlib.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:83) [?:?] at com.massivecraft.mcore.xlib.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:1) [?:?] at com.massivecraft.mcore.xlib.gson.Gson.fromJson(Gson.java:773) [?:?] ... 14 more

@TheLeoComplex

This absolutely works!! Everybody, if you're getting "unsupported major.minor 51.0" errors, go download the Java JDK! Just make sure to restart your computer afterwards!

@Byteflux

@Byteflux....you are the man!

My dedicated server had a standard restart earlier today, and when I logged back on...FACTIONS, MASSIVE TICKET, CREATIVE GATES, etc....weren't working. All I did was:

plugins/mcore/idnamecache.json

RENAMED TO

plugins/mcore/idnamecacheOLD.json

RESTARTED

Boom! Everything works again!

@ShadowKillerx

Judging by the code indicated in the stack trace, this may have something to do with a problem in your plugins/mcore/idnamecache.json file. You can try renaming this file then starting the server up and having mcore generate a new version.

So guys I think I might be able to fix a problem a lot of you guys are running into. It took me weeks to figure this out but I kept getting this error code [22:46:55 ERROR]: Could not load 'plugins/mcore.jar' in folder 'plugins' org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/massivecraft/mcore/MCore : Unsupported major.minor version 51.0 at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugins(CraftServer.java:355) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.<init>(CraftServer.java:317) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.PlayerList.<init>(PlayerList.java:68) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:126) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:436) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] Caused by: java.lang.UnsupportedClassVersionError: com/massivecraft/mcore/MCore : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) [?:1.6.0_65] at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637) [?:1.6.0_65] at java.lang.ClassLoader.defineClass(ClassLoader.java:621) [?:1.6.0_65] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) [?:1.6.0_65] at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) [?:1.6.0_65] at java.net.URLClassLoader.access$000(URLClassLoader.java:58) [?:1.6.0_65] at java.net.URLClassLoader$1.run(URLClassLoader.java:197) [?:1.6.0_65] at java.security.AccessController.doPrivileged(Native Method) [?:1.6.0_65] at java.net.URLClassLoader.findClass(URLClassLoader.java:190) [?:1.6.0_65] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at java.lang.ClassLoader.loadClass(ClassLoader.java:306) [?:1.6.0_65] at java.lang.ClassLoader.loadClass(ClassLoader.java:247) [?:1.6.0_65] at java.lang.Class.forName0(Native Method) [?:1.6.0_65] at java.lang.Class.forName(Class.java:249) [?:1.6.0_65] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] ... 9 more I was confused because it was basically telling me something was out of date. I pretty much turned my computer through multiple versions of java and nothing worked. Oracle or Apple has a huge mistake I blame Oracle because of how stupid it is. You can install JRE 7 and it won't update your path on your server meaning if you set up a server back in 2010 and you are running 1.7.9 and had an older version of Java installed it is still running that version even if JRE 7 is installed. Here is the fix go to this link http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html and install the JDK or Java SE Development Kit. As soon as I downloaded it and installed it my server ran smooth as butter no more error logs and I was getting other error messages too that didn't affect my gameplay also went away too. I really hope this helped!

Please help, anyone!

On my server, I cannot get 5 plugins to work, supposedly for all the same reason, but I can't figure out how to correct it! (MCore included) This is the start up log for my server.

http://pastebin.com/769Vq8JC

I have the plugins: Cannons ClearLag (Broken) CommandRank EasyPlayers Heads Essentials (Core, Chat, and Spawn) Factions (Broken) HeathBar InfiniteDispensersAndDroppers (Broken) mcMMO mcore (Broken) Modifyworld Multiverse (Core and SignPortals) PEX PluginManager (Broken) ProtocolLib Punishmental SilkSpawners Vault WorldEdit WorldGuard

Please somebody help me! I cant figure out whats wrong and it's driving me insane!!!

Thank you!!

Lol tonight my dedicated server crashed and now mcore dont work wtf?

http://pastebin.com/stE3yjSz

I didnt change anything.

@SEGA_Q8

There is a new update...check it out.

@ArchNem1s1s

You know how to do all that but don't know how to use pastebin? It works just fine on my server. Please post those mega errors somewhere else so I can see the discussions on one page.

Been like this since 1.7.3 and its really starting to piss me off.. Ive tried to change the versions, update/downgrade java, Ive bascially tried everything and nothings working and its pretty much destroyed my server. It wont load mcore or factions either.

[13:30:10 ERROR]: Could not load 'plugins/mcore.jar' in folder 'plugins' org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/massivecraft/mcore/MCore : Unsupported major.minor version 51.0 at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.loadPlugins(CraftServer.java:355) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.craftbukkit.v1_7_R3.CraftServer.<init>(CraftServer.java:317) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.PlayerList.<init>(PlayerList.java:68) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.DedicatedServer.init(DedicatedServer.java:126) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:436) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] Caused by: java.lang.UnsupportedClassVersionError: com/massivecraft/mcore/MCore : Unsupported major.minor version 51.0 at java.lang.ClassLoader.defineClass1(Native Method) [?:1.6.0_65] at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637) [?:1.6.0_65] at java.lang.ClassLoader.defineClass(ClassLoader.java:621) [?:1.6.0_65] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) [?:1.6.0_65] at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) [?:1.6.0_65] at java.net.URLClassLoader.access$000(URLClassLoader.java:58) [?:1.6.0_65] at java.net.URLClassLoader$1.run(URLClassLoader.java:197) [?:1.6.0_65] at java.security.AccessController.doPrivileged(Native Method) [?:1.6.0_65] at java.net.URLClassLoader.findClass(URLClassLoader.java:190) [?:1.6.0_65] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at java.lang.ClassLoader.loadClass(ClassLoader.java:306) [?:1.6.0_65] at java.lang.ClassLoader.loadClass(ClassLoader.java:247) [?:1.6.0_65] at java.lang.Class.forName0(Native Method) [?:1.6.0_65] at java.lang.Class.forName(Class.java:249) [?:1.6.0_65] at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) [craftbukkit.jar:git-Bukkit-1.7.9-R0.1-b3084jnks] ... 9 more

i have the same problem its not runing in my server !!! its was working before two weeks ago but now its not !

04.06 11:54:32 [Server] INFO org.bukkit.plugin.UnknownDependencyException: mcore
04.06 11:54:32 [Server] ERROR Could not load 'plugins/Factions.jar' in folder 'plugins'
04.06 11:54:32 [Server] INFO This server is running CraftBukkit version git-Bukkit-1.7.2-R0.3-59-g6efeddf-b3074jnks (MC: 1.7.9) (Implementing API version 1.7.9-R0.1-SNAPSHOT)

I'm not sure if it is the version of CraftBukkit that I am running, but I am unable to add mcore or factions successfully to my server.

(I've used factions on my servers in the past, and was trying to go back to it again today.)