looking at your DCommands project on Spigot - there's a lot that could be improved on. For example, you don't ignore cancelled commands, you don't test the length of the array, you inefficiently test if the command is registered in your plugin, you don't cache config values, you don't have config-defined messages, you don't separate your project into different packages (just a nitpick), you name your main class Main, you bundle .classpath and .project which tells me that this wasn't compiled with maven, your plugin.yml isn't really complete (it's working functional but not detailed), you do unneeded checks in your Main class