Error sending request: No valid RADIUS responses received

[Greg Larkins]

>> I don't understand why these lines are absent from my working server
>> clients.conf file and yet it works. Obviously the NAS info must be
>> present somewhere else, but where?

>You have read_clients set to "yes" in your mods-enabled/sql
>config, and the client listed in the "nas" table?

I think you nailed it Matthew, that's the crucial difference.
Thank you.