title: ClassNotFoundException In a Bukkit java Plugin
body: <p>I'm trying to revive a plugin and im geting thir error:</p>
  
  <pre><code>[03:01:18 ERROR]: Could not load 'plugins\Reporter.jar' in folder 'plugins'
  org.bukkit.plugin.InvalidPluginException: java.lang.ClassNotFoundException: me.f
  levasgr.rainbow.Reporter
          at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
  ava:184) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.
  java:308) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager
  .java:231) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugins(CraftServer.ja
  va:255) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at org.bukkit.craftbukkit.v1_7_R1.CraftServer.&lt;init&gt;(CraftServer.java:23
  3) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at net.minecraft.server.v1_7_R1.PlayerList.&lt;init&gt;(PlayerList.java:63) [c
  raftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at net.minecraft.server.v1_7_R1.DedicatedPlayerList.&lt;init&gt;(SourceFile:14
  ) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.jav
  a:126) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java
  :424) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:6
  17) [craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
  Caused by: java.lang.ClassNotFoundException: me.flevasgr.rainbow.Reporter
          at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_25]
          at java.net.URLClassLoader$1.run(Unknown Source) ~[?:1.7.0_25]
          at java.security.AccessController.doPrivileged(Native Method) ~[?:1.7.0_
  25]
          at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.7.0_25]
          at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader
  .java:80) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.
  java:53) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_25]
          at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.7.0_25]
          at java.lang.Class.forName0(Native Method) ~[?:1.7.0_25]
          at java.lang.Class.forName(Unknown Source) ~[?:1.7.0_25]
          at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.j
  ava:173) ~[craftbukkit.jar:git-Bukkit-1.7.2-R0.2-b2974jnks]
          ... 9 more
  </code></pre>
  
  <p>I've done everything right! The plugin.yml the external jar and the export but still doesnt work. Any idea why?</p>