Взаимопомощь Mac

You need to find the client.cfg and not the client_defaul.cfg!
You could try this location: librery>users>youruser
>library>containers>com....ryzom>data>library>a pp support>ryzom

In case this does not work, try to log into http://webchat.freenode.net/?channels=ryzommac and ask for help or wait for other mac users to reply to this thread.

Good luck!