Java: Develop plugin Could not load 'plugins \ System.jar' in folder 'plugins'?

Za
- in Plugins
1

I have one last question for Minecraft Plugins today. I keep it short because I don't have much time. When I want to test my plugin, I get this message:

[Server thread / ERROR]: Could not load 'plugins \ System.jar' in folder 'plugins'

The Yml file:

main: main.Bukkit.plugin.mcp
name: system
version: 1.0
author: me
description: -no desc-

What's wrong?

Ka

The main class (with exact path) must be in main in plugin.yml. You just wrote the package there, without class.

main.Bukkit.plugin.mcp.CLASS