I've purchased McMMo plugin recently and the first time I downloaded it I couldn't use it. I am well aware of using the old version; in fact, I have tried every single version. No versions work. I've checked all the plugins and made sure they had no conflict with McMMo plugin. I even tried uninstalling every other plugin and simply add the suggested plugins PermissionBukkit but it still doesn't work. The Error Message I received is simply there is an error loading McMMo.