Comment 4 for bug 558267

Logged In: YES
user_id=1042734
Originator: NO

As a quick change to that section:

  try:
            if invite:
                if mlist.isMember(member):
                    raise Errors.MMAlreadyAMember
                    print >> tee, _('Already a member: %(member)s')
                else:
                    mlist.InviteNewMember(userdesc, invite_msg)
            else:
                mlist.ApprovedAddMember(userdesc, ack, 0)

This works - but still not for banned.