Sorry to do this but: Vicious you're kinda wrong

The real problem is that GroupManager just wiped the users.yml file which _ONLY_ stores what group a user is in, so if you weren't in the guest group (which is the default) you're now a guest. No data was really lost and the reason it's not been fixed yet is because I'm busy recuperating after leach

Not that it really matters so those of you that played the server now anyway, since you went and bought your own.