[TheHokkaidoCrow]

This part smells kind of funny...

// Edit to set user roles for different vB usergroups 
function getRoles($usergroupid) {
	switch($usergroupid) {
		case 5:
		case 6:
			return ROLE_ADMIN; // Chat Staff //
		case 2:
		case 7:
		case 8:
			return ROLE_USER; // Allowed Users //
		default:
			return ROLE_NOBODY; // Unauthorised Users (i.e. everyone else) //
	}
}

On my unhacked 3.0.7 vBulletin system, usergroupid 8 is the banned group. The regular users are all usergroupid 2. Why are you returning a ROLE_USER for case 8?