FOR THOSE OF YOU WHO ARE GETTING THIS BE VERY CAREFUL.
The plugin will work for a while, then one day, when you suddenly start the server, it will break. It's part of Maximmvdw's anti-piracy setup and it's happened to just about every featherboard leak. He does this to get people comfortable with the plugin, then he'll activate the backdoor, this way some people who've gotten used to it will suddenly scramble for a copy, and some of them will buy the plugin. (He stated this himself in a thread with GC, the creater of Advanced Echantments about stopping leaking)