I don't know more about this I fine some information about your qustion I think this is helpful to you
I installed phpMyAdmin 3.1.3.1 and am trying to use the server setup script (
http://localhost/phpmyadmin/setup/index.php), but cannot get it to work because it does not seem to have write access to the "config" directory that I created in the "...\htdocs\phpMyAdmin\" folder as described in the documentation. I receive the following error in the setup: "Cannot load or save configuration...Please create web server writable folder config in phpMyAdmin...".