Bukkit

What steps will reproduce the problem?
1. Starting the server with the plugin

What is the expected output? What do you see instead?
I expect it to load fine and work when used in-game.

What version of the product are you using?
The latest one

Do you have an error log of what happened?

20:31:08 [SEVERE] Could not load 'plugins/PluginFake.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.NoClassDefFoundError: me/barwnikk/Bukkit/pluginfake/PluginFake (wrong name: me/barwnikk/pluginfake/PluginFake)
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:184)
    at org.bukkit.plugin.SimplePluginManager.loadPlugin(SimplePluginManager.java:306)
    at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:230)
    at org.bukkit.craftbukkit.v1_6_R2.CraftServer.loadPlugins(CraftServer.java:243)
    at net.minecraft.server.v1_6_R2.DedicatedServer.init(DedicatedServer.java:117)
    at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:397)
    at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NoClassDefFoundError: me/barwnikk/Bukkit/pluginfake/PluginFake (wrong name: me/barwnikk/pluginfake/PluginFake)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:792)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at org.bukkit.plugin.java.PluginClassLoader.findClass0(PluginClassLoader.java:80)
    at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:53)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:270)
    at org.bukkit.plugin.java.JavaPluginLoader.loadPlugin(JavaPluginLoader.java:173)
    ... 6 more

Please provide any additional information below.
Please fix! I really need this for my server.