Running 8.0.1 HP1

Created a distribution list, assigned a user to be administrator.

I can add the users though C1 and they show up and remain in the list but
the user can't from the client.

That user can't add other users, when they go into the details of the list
the "add" is active, they can select users to add but once added and select
ok, new users appear but when closed out and gone back into, the new users
don't appear.