I Need BungeeCord Help!

Hey,
So I've got 3 servers, and I've linked them with BungeeCord,
One Proxy, One Hub, and One Factions Server
The Proxy is the only server players can join to, so that no cracked accounts can get in.
The problem is, the Proxy won't start up correctly, in the Multicraft 'View Server' it's still in 'startup' stage, it's not online or offline. Here's the console logs:

31.05 13:22:18 [Multicraft] Skipped 272 lines due to rate limit (30/s)
31.05 13:22:17 [Server] INFO Caused by: java.lang.ClassNotFoundException: org.bukkit.plugin.Plugin
31.05 13:22:17 [Server] INFO at net.md_5.bungee.Bootstrap.main(Bootstrap.java:15)
31.05 13:22:17 [Server] INFO at net.md_5.bungee.BungeeCordLauncher.main(BungeeCordLauncher.java:54)
31.05 13:22:17 [Server] INFO at net.md_5.bungee.BungeeCord.start(BungeeCord.java:244)
31.05 13:22:17 [Server] INFO at net.md_5.bungee.api.plugin.PluginManager.loadPlugins(PluginManager.java:205)
31.05 13:22:17 [Server] INFO at net.md_5.bungee.api.plugin.PluginManager.enablePlugin(PluginManager.java:297)
31.05 13:22:17 [Server] INFO at java.lang.ClassLoader.loadClass(Unknown Source)
31.05 13:22:17 [Server] INFO at net.md_5.bungee.api.plugin.PluginClassloader.loadClass(PluginClassloader.java:27)
31.05 13:22:17 [Server] INFO at net.md_5.bungee.api.plugin.PluginClassloader.loadClass0(PluginClassloader.java:34)
31.05 13:22:17 [Server] INFO at java.lang.ClassLoader.loadClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader.findClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.security.AccessController.doPrivileged(Native Method)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader$1.run(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader$1.run(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader.access$100(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader.defineClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.security.SecureClassLoader.defineClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.lang.ClassLoader.defineClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.lang.ClassLoader.defineClass1(Native Method)
31.05 13:22:17 [Server] INFO at java.lang.ClassLoader.loadClass(Unknown Source)
31.05 13:22:17 [Server] INFO at net.md_5.bungee.api.plugin.PluginClassloader.loadClass(PluginClassloader.java:27)
31.05 13:22:17 [Server] INFO at net.md_5.bungee.api.plugin.PluginClassloader.loadClass0(PluginClassloader.java:34)
31.05 13:22:17 [Server] INFO at java.lang.ClassLoader.loadClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader.findClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.security.AccessController.doPrivileged(Native Method)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader$1.run(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader$1.run(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader.access$100(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader.defineClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.security.SecureClassLoader.defineClass(Unknown Source)
31.05 13:22:17 [Multicraft] Skipped 21 lines due to rate limit (30/s)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader$1.run(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader$1.run(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader.access$100(Unknown Source)
31.05 13:22:17 [Server] INFO at java.net.URLClassLoader.defineClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.security.SecureClassLoader.defineClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.lang.ClassLoader.defineClass(Unknown Source)
31.05 13:22:17 [Server] INFO at java.lang.ClassLoader.defineClass1(Native Method)
31.05 13:22:17 [Server] INFO java.lang.NoClassDefFoundError: org/bukkit/command/TabCompleter
31.05 13:22:17 [Server] WARNING Error enabling plugin WorldEdit
31.05 13:22:17 [Server] INFO Loaded plugin cmd_alert version git:cmd_alert:1.8-SNAPSHOT:"fa828eb":1059 by SpigotMC
31.05 13:22:17 [Server] INFO Discovered module: ModuleSpec(name=reconnect_yaml, file=modules\reconnect_yaml.jar, provider=JenkinsModuleSource())
31.05 13:22:17 [Server] INFO Discovered module: ModuleSpec(name=cmd_server, file=modules\cmd_server.jar, provider=JenkinsModuleSource())
31.05 13:22:17 [Server] INFO Discovered module: ModuleSpec(name=cmd_send, file=modules\cmd_send.jar, provider=JenkinsModuleSource())
31.05 13:22:17 [Server] INFO Discovered module: ModuleSpec(name=cmd_list, file=modules\cmd_list.jar, provider=JenkinsModuleSource())
31.05 13:22:17 [Server] INFO Discovered module: ModuleSpec(name=cmd_find, file=modules\cmd_find.jar, provider=JenkinsModuleSource())
31.05 13:22:17 [Server] INFO Discovered module: ModuleSpec(name=cmd_alert, file=modules\cmd_alert.jar, provider=JenkinsModuleSource())
31.05 13:22:16 [Server] INFO Enabled BungeeCord version git:BungeeCord-Bootstrap:1.8-SNAPSHOT:"fa828eb":1059
31.05 13:22:16 [Server] INFO Using standard Java compressor. To enable zero copy compression, run on 64 bit Linux
31.05 13:22:16 [Server] INFO Using standard Java JCE cipher. To enable the OpenSSL based native cipher, please make sure you are using 64 bit Ubuntu or Debian with libssl installed.
31.05 13:22:06 [Server] INFO *** Server will start in 10 seconds ***
31.05 13:22:06 [Server] INFO *** You will get NO support regarding this build ***
31.05 13:22:06 [Server] INFO *** Please download a new build from http://ci.md-5.net/job/BungeeCord ***
31.05 13:22:06 [Server] INFO *** Warning, this build is outdated ***
31.05 13:22:06 [Multicraft] Loaded config for "Mod: BungeeCord 1.8"
31.05 13:22:06 [Multicraft] Starting server!
31.05 13:22:06 [Multicraft] Loading server properties

It's from the bottom up, so the top is the most recent. This is from startup, until it stops printing text.

Thanks for helping guys,
Melon