Bukkit Server - Some plugins don't work

Hi,

I have a problem with some of my Bukkit plugins on my server, in that some of them don't work at all.
I place them in my plugins folder along with all my other plugins and they just don't work, no folder or config.yml is generated and /plugins shows only the ones that do work. Not even an error message appears. Could it be that I am on a Mac?
The plugins that do work are:

Citizens, WorldEdit, NBTEditor, PermissionsEx, HealthBar, iControlU, Builder, WorldGuard, Leaper, Chairs, Shopkeepers, Sentry, HothGenerator, EndlessEnchant, BouncingArrows, ColorMe, ProtocolLib, ForcedGrammar, CleanroomGenerator, Essentials, EssentialsProtect, EssentialsSpawn, Skins, 173generator, Multiverse-Core, EssentialsAntiBuild, EssentialsChat, Multiverse-Portals, Multiverse-Inventories, Multiverse-NetherPortals, FramePicture

The plugins that don't work are:

Animal Protect,
KitEssentials,
SimpleAlias,
VoxelSniper,
PlugMan,
HubEssentials,
GiantCaveGenerator,
CityWorld,
BossBarMessgae,
AntiCommandTab,
173Generator,
and some others which I have deleted

Maybe there's a clash of some sort.

If any of you people out there has any idea about what the problem could be, I would be very, very happy if you could come up with a solution. It is becoming very frustrating!

These plugins will be really useful but they just don't work, and I don't know what to do.

I am running CB 1.7.2 and all the plugins that don't work are 1.7.2 versions, not that that matters as I have some plugins which are for older versions of CraftBukkit.

Thanks,

Quenton4

 

Quenton4
First off, a startup log would be nice

Also reviewing your plugins, are you making sure that you have installed all of the dependencies?
For example:
DisguiseCraft needs ProtLib to run.

 

I do actually have ProtLib installed and I don't have disguise craft, but I get your point. Do you know of any requirements for the plugins I have mentioned that don't work?
As for a startup log, is there any part of it I shouldn't post because of hacking or is it all pretty much safe? Just to be safe I want to know if there are any precautions that need to be taken when posting a startup log. (may be vulnerable to hackers?) Yep I'm a noob at that sort of thing.
Thanks for your quick reply.

 

As he said we need that startup log.

 

Quenton4
Nothing is vulnerable in the startup log that would cause anyone to hack you. Haha. It just shows your plugins, your internal IP (which no one can touch), and your build.

 

HelpfulBeast Okay I'll post it when I get my computer back this evening,

 

Quenton4
Gotcha, take your time.

 

HelpfulBeast Okay here is a log of the server. Just ignore the part where I log on and do stuff

 

@HelpfulBeast Hmmmm... the attached file didn't work

I'll copy and paste into comments
I had to cut some out (just stuff that didn't look necessary) because the message was too long but here it is:

[16:43:30] [Server thread/INFO]: Starting minecraft server version 1.7.2
[16:43:30] [Server thread/INFO]: Loading properties
[16:43:30] [Server thread/INFO]: Default game type: SURVIVAL
[16:43:30] [Server thread/INFO]: Generating keypair
[16:43:30] [Server thread/INFO]: Starting Minecraft server on *:25565
[16:43:31] [Server thread/INFO]: This server is running CraftBukkit version git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks (MC: 1.7.2) (Implementing API version 1.7.2-R0.4-SNAPSHOT)
[16:43:32] [Thread-11/INFO]: ----- Bukkit Auto Updater -----
[16:43:32] [Thread-11/INFO]: It appears that you're running a Development Build, when you've specified in bukkit.yml that you prefer to run Recommended Builds.
[16:43:32] [Thread-11/INFO]: If you would like to be kept informed about new Development Build releases, it is recommended that you change 'preferred-channel' in your bukkit.yml to 'dev'.
[16:43:32] [Thread-11/INFO]: With that set, you will be told whenever a new version is available for download, so that you can always keep up to date and secure with the latest fixes.
[16:43:32] [Thread-11/INFO]: If you would like to disable this warning, simply set 'suggest-channels' to false in bukkit.yml.
[16:43:32] [Thread-11/INFO]: ----- ------------------- -----
[16:43:33] [Server thread/ERROR]: Could not load 'plugins/PlugMan-2.0.0-DEV-2.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/rylinaux/plugman/PlugMan : Unsupported major.minor version 51.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.java:350) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.<init>(CraftServer.java:312) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.PlayerList.<init>(PlayerList.java:63) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:126) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:424) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
Caused by: java.lang.UnsupportedClassVersionError: com/rylinaux/plugman/PlugMan : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.6.0_43]
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) ~[?:1.6.0_43]
at java.lang.ClassLoader.defineClass(ClassLoader.java:615) ~[?:1.6.0_43]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) ~[?:1.6.0_43]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) ~[?:1.6.0_43]
at java.net.URLClassLoader.access$000(URLClassLoader.java:58) ~[?:1.6.0_43]
at java.net.URLClassLoader$1.run(URLClassLoader.java:197) ~[?:1.6.0_43]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.6.0_43]
at java.net.URLClassLoader.findClass(URLClassLoader.java:190) ~[?:1.6.0_43]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at java.lang.ClassLoader.loadClass(ClassLoader.java:306) ~[?:1.6.0_43]
at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ~[?:1.6.0_43]
at java.lang.Class.forName0(Native Method) ~[?:1.6.0_43]
at java.lang.Class.forName(Class.java:249) ~[?:1.6.0_43]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
... 9 more
[16:43:33] [Server thread/ERROR]: Could not load 'plugins/KitEssentials.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: me/MirrorRealm/kKits/Main : Unsupported major.minor version 51.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.java:350) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.<init>(CraftServer.java:312) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.PlayerList.<init>(PlayerList.java:63) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:126) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:424) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
Caused by: java.lang.UnsupportedClassVersionError: me/MirrorRealm/kKits/Main : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.6.0_43]
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) ~[?:1.6.0_43]
at java.lang.ClassLoader.defineClass(ClassLoader.java:615) ~[?:1.6.0_43]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) ~[?:1.6.0_43]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) ~[?:1.6.0_43]
at java.net.URLClassLoader.access$000(URLClassLoader.java:58) ~[?:1.6.0_43]
at java.net.URLClassLoader$1.run(URLClassLoader.java:197) ~[?:1.6.0_43]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.6.0_43]
at java.net.URLClassLoader.findClass(URLClassLoader.java:190) ~[?:1.6.0_43]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at java.lang.ClassLoader.loadClass(ClassLoader.java:306) ~[?:1.6.0_43]
at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ~[?:1.6.0_43]
at java.lang.Class.forName0(Native Method) ~[?:1.6.0_43]
at java.lang.Class.forName(Class.java:249) ~[?:1.6.0_43]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
... 9 more
[16:43:33] [Server thread/ERROR]: Could not load 'plugins/GiantCaves-1.7.2-R01.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/ryanmichela/giantcaves/GCPlugin : Unsupported major.minor version 51.0
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:131) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:328) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:251) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.java:350) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.craftbukkit.v1_7_R1.CraftServer.<init>(CraftServer.java:312) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.PlayerList.<init>(PlayerList.java:63) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.DedicatedPlayerList.<init>(SourceFile:14) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:126) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:424) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
Caused by: java.lang.UnsupportedClassVersionError: com/ryanmichela/giantcaves/GCPlugin : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.6.0_43]
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) ~[?:1.6.0_43]
at java.lang.ClassLoader.defineClass(ClassLoader.java:615) ~[?:1.6.0_43]
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) ~[?:1.6.0_43]
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) ~[?:1.6.0_43]
at java.net.URLClassLoader.access$000(URLClassLoader.java:58) ~[?:1.6.0_43]
at java.net.URLClassLoader$1.run(URLClassLoader.java:197) ~[?:1.6.0_43]
at java.security.AccessController.doPrivileged(Native Method) ~[?:1.6.0_43]
at java.net.URLClassLoader.findClass(URLClassLoader.java:190) ~[?:1.6.0_43]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:77) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:62) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at java.lang.ClassLoader.loadClass(ClassLoader.java:306) ~[?:1.6.0_43]
at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ~[?:1.6.0_43]
at java.lang.Class.forName0(Native Method) ~[?:1.6.0_43]
at java.lang.Class.forName(Class.java:249) ~[?:1.6.0_43]
at org.bukkit.plugin.java.PluginClassLoader.<init>(PluginClassLoader.java:40) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:127) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
... 9 more
Other stuff here, just stuff about plugins that worked, mainly WorldEdit and Multiverse
Also some more plugin errors that were pretty much the same but different names
What does this mean?!
[16:44:20] [Server thread/INFO]: Server permissions file permissions.yml is empty, ignoring it
[16:44:22] [Server thread/INFO]: Done (47.116s)! For help, type "help" or "?"
[16:44:23] [Server thread/WARN]: [Sentry] Could not register with Vault! the GROUP target will not function.
[16:44:23] [Server thread/INFO]: [WorldGuard] 1 regions loaded for 'creative'
[16:44:23] [Server thread/INFO]: [WorldGuard] 1 regions loaded for 'pvparena'
[16:44:23] [Server thread/INFO]: [Citizens] Loaded 20 NPCs.
[16:44:25] [Server thread/INFO]: [ProtocolLib] The updater did not find an update, and nothing was downloaded.
[16:44:26] [Server thread/INFO]: [WorldGuard] 1 regions loaded for 'parkour'
[16:44:26] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 3813ms behind, skipping 76 tick(s)
[16:44:28] [Server thread/INFO]: Plugins (31): Citizens, WorldEdit, NBTEditor, PermissionsEx, HealthBar, iControlU, Builder, WorldGuard, Leaper, Chairs, Shopkeepers, Sentry, HothGenerator, EndlessEnchant, BouncingArrows, ColorMe, ProtocolLib, ForcedGrammar, CleanroomGenerator, Essentials, EssentialsProtect, EssentialsSpawn, Skins, 173generator, Multiverse-Core, EssentialsAntiBuild, EssentialsChat, Multiverse-Portals, Multiverse-Inventories, Multiverse-NetherPortals, FramePicture
[16:44:47] [Server thread/INFO]: [WorldGuard] 1 regions loaded for 'hoth'
[16:44:59] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 14438ms behind, skipping 288 tick(s)
[16:45:03] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2073ms behind, skipping 41 tick(s)
[16:48:38] [Server thread/INFO]: [WorldGuard] 1 regions loaded for 'survival2'
[16:49:41] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4322ms behind, skipping 86 tick(s)
[16:50:23] [Server thread/INFO]: [WorldGuard] 1 regions loaded for 'redstone'
[16:54:42] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 3726ms behind, skipping 74 tick(s)
[16:59:45] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4544ms behind, skipping 90 tick(s)
[17:04:46] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 3301ms behind, skipping 66 tick(s)
[17:09:48] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 3469ms behind, skipping 69 tick(s)
[17:13:08] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2194ms behind, skipping 43 tick(s)
[17:13:26] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 3168ms behind, skipping 63 tick(s)
[17:13:57] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 11390ms behind, skipping 227 tick(s)
[17:14:09] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 5015ms behind, skipping 100 tick(s)
[17:15:06] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 6810ms behind, skipping 136 tick(s)
[17:15:33] [User Authenticator #1/INFO]: UUID of player Quenton4 is 8210249a350d476fb987cfa39d791b7a
[17:15:35] [Server thread/INFO]: Quenton4[/127.0.0.1:56273] logged in with entity id 2902 at ([hub] -147.33337193520137, 4.0, 774.9769723633486)
[17:15:36] [Server thread/INFO]: [WorldGuard] 1 regions loaded for 'hub'
[17:15:36] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 2890ms behind, skipping 57 tick(s)
[17:15:48] [Server thread/INFO]: [Multiverse-Core] World 'hoth' was unloaded from memory.
[17:15:48] [Server thread/INFO]: [Multiverse-Core] World 'hoth' was removed from config.yml
[17:15:48] [Server thread/INFO]: World removed from config!
[17:15:53] [Server thread/WARN]: Can't keep up! Did the system time change, or is the server overloaded? Running 4900ms behind, skipping 98 tick(s)

 

Quenton4

Alright, first off all, I noticed this:

Code:

[16:43:33] [Server thread/ERROR]: Could not load 'plugins/PlugMan-2.0.0-DEV-2.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.UnsupportedClassVersionError: com/rylinaux/plugman/PlugMan : 

Do you see the "UnsupportedClassVersionError"? That normally means that your Java is outdated. I saw errors similar to this. Try updating your Java

 

I have

java version "1.6.0_43"
Java(TM) SE Runtime Environment
Java HotSpot(TM) 64-Bit Server VM

if that helps

 

Quenton4
That's the issue, you need to have version 1.7
If you want the latest, you would need to download version 7u51, here is the link for that download:
http://www.oracle.com/technetwork/java/javase/downloads/jre7-downloads-1880261.html

 

HelpfulBeast Thanks but how do I update java on mac?

Ignore my questions your posts pop up when I post

 

Quenton4
Click on the link I sent you, scroll down to the list of OS's, and click the top link with the Mac OS X.

 

Okay it's downloading now, it may take a few minutes with my 'super speed internet' at 1.4 MB/s

 

Quenton4
Lol, that's fine. It does take a few.

 

3 minutes left

again after installing update: at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Bukkit-1.7.2-R0.3-2-g85f5776-b3023jnks]
Caused by: java.lang.UnsupportedClassVersionError: com/rylinaux/plugman/PlugMan : Unsupported major.minor version 51.0

gotta go back soon

 

Quenton4
My next guess is that the plugins you are running were not compiled with Java 1.7.

 

HelpfulBeast Do I need to restart the computer? It still hasn't worked

 

That would mean it was the plugins' problem.

 

Perhaps I need to recompile the plugins... but how?

 

Quenton4
You can't, they are the manager and maintainer's work. You'll need to contact them and ask for an updated Java 7 version.

 

But it says VoxelSniper is out for 1.7.2

• R: VoxelSniper 5.168.9-SNAPSHOT for CB 1.7.2-R0.2 Feb 05, 2014

 

Quenton4
You aren't having errors for VoxelSniper. See the plugins with the huge stack traces saying something as to "Unsupported Class Version"? Yes, you need to ask the plugin writer to either update the plugin, or use a different one.

 

Should I downgrade to java 6?

 

Quenton4
No, that will break your server even more. You need to probably get more well-known plugins that do almost the same thing that the broken ones are doing, except unbroken.

 

I can't see your posts without posting, ignore this

 

Refresh the page every once in a while after you post. That will help.

 

what equivalents do you suggest: VoxelSniper is the best terraforming plugin out there and nothing controls the Hub like HubEssentials.

 

Quenton4
VoxelSniper is not an issue here, there is no errors relating to this plugin. I was just making a reference to it.
HubEssentials also is not an issue.

I see a plugin called PlugMan, that is throwing errors. Either contact the maker or download something similar to it.