I have one AP that I tried this on. I hide the SSID and try and apply the default authentication.
I have also saved my clients to an access list. When I try to un check default authentication it will save, but only one or two of my clients will register. I have approximately 12 clients on this AP. I have used these same steps on several other AP's and it works fine. Any suggestions?

Check for the correct configuration on 'access-list' (make sure that all options match client settings), make sure you are running the latest version.

Thanks, Sergejs, You were my instructor in Florida.