Error Messages

Hello, if you saw some of my earlier posts you would know my LWC and other mods were not working, I finally got them working. Now I have these error messages, I wish to know what they mean and how to fix them. I have had to delete my old world because in the first 30 secs of server start over 50k characters were used and 10k more every 5 secs. I don't want that kind of spam in my terminal because i need to find out if people use /item diamondpickaxe 100000 or use inappropriate language.


This is my Terminal:

Code:

Last login: Fri Mar 18 20:56:06 on ttys000
/Users/Matthew/Desktop/Bukkit\ Server/LaunchServer.command ; exit;
Matthew-Alan-Troutmans-MacBook:~ Matthew$ /Users/Matthew/Desktop/Bukkit\ Server/LaunchServer.command ; exit;
20:56:47 [INFO] Starting minecraft server version Beta 1.3
20:56:47 [INFO] Loading properties
20:56:47 [INFO] Starting Minecraft server on *:25565
20:56:47 [INFO] This server is running Craftbukkit version git-Bukkit-0.0.0-544-g6c6c30a-b556jnks (MC: 1.3)
20:56:47 [INFO] Preparing level "world"
20:56:47 [INFO] Preparing start region
20:56:48 [INFO] Preparing spawn area: 57%
20:56:49 [INFO] Preparing spawn area: 61%
20:56:50 [INFO] Preparing spawn area: 65%
20:56:51 [INFO] Preparing spawn area: 69%
20:56:52 [INFO] Preparing spawn area: 77%
20:56:53 [INFO] Preparing spawn area: 81%
20:56:54 [INFO] Preparing spawn area: 85%
20:56:55 [INFO] Preparing spawn area: 93%
20:56:56 [INFO] Preparing spawn area: 97%
20:56:57 [SEVERE] Could not load plugins/Essentials.jar in plugins: null
org.bukkit.plugin.InvalidPluginException
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:69)
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:159)
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:107)
    at org.bukkit.craftbukkit.CraftServer.loadPlugins(CraftServer.java:61)
    at net.minecraft.server.MinecraftServer.e(MinecraftServer.java:204)
    at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:191)
    at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:131)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:246)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:366)
Caused by: java.util.zip.ZipException: error in opening zip file
    at java.util.zip.ZipFile.open(Native Method)
    at java.util.zip.ZipFile.<init>(ZipFile.java:127)
    at java.util.jar.JarFile.<init>(JarFile.java:135)
    at java.util.jar.JarFile.<init>(JarFile.java:99)
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:56)
    ... 8 more
20:56:57 [INFO] LWC    Loading shared objects
20:56:57 [INFO] LWC    Native library: plugins/LWC/lib/native/Mac/x86_64/libsqlitejdbc.jnilib
20:56:57 [INFO] [Permissions] version [2.5.4] (Phoenix) was Initialized.
20:56:57 [INFO] CraftBukkitUpToDate version 2.1.2 is enabled!
20:56:57 [INFO] [Permissions] version [2.5.4] (Phoenix)  loaded
20:56:58 [INFO] CButD: CraftBukkit is up to Date
20:56:58 [INFO] [iChat] Using Permissions 2.5 (2.5.4) for permissions
20:56:58 [INFO] iChat (v2.11) enabled
20:56:59 [INFO] [iConomy] Logging is currently disabled.
20:56:59 [INFO] [iConomy] v4.4 (Arcadia) loaded.
20:56:59 [INFO] [iConomy] Developed by: [Nijikokun, Coelho]
20:56:59 [INFO] [iConomy] hooked into Permissions.
20:57:00 [INFO] LWC    Using Nijikokun's permissions plugin for permissions
20:57:00 [INFO] LWC    Loading SQLite
20:57:00 [INFO] SQLite    Using: Pure
20:57:00 [INFO] LWC    At version: v1.63
20:57:00 [INFO] Done (1.331s)! For help, type "help" or "?"
20:57:08 [INFO] CButD: Plugin-Update-Check started
20:57:13 [INFO] CButD: Plugin-Update-Check finished
>

I am using the latest verision of MacOSX

 

Do you have permissions plugin installed? Do you have the new compatible one?