Same problem.
It is very inconvenient, indeed.
I hope WP will solve this problem as quick as possible. It is been few days already, too long.
hi,
did you solve your problem? actually i just had exactly same problem and just solved by change name of database on MAMP.
My mistake was to create new DB name on MAMP different than wp-config.php file. Meaning, if you had this one your txt ( wp-config.php file )file, then you should have the SAME DB name as ‘wordpress’ on MAMP phpmyadmin page when you create new DB.
Hope it helps. If not, let me know. :))
define(‘DB_NAME’, ‘wordpress‘); //database for WordPress
define(‘DB_USER’, ‘root’); //database username
define(‘DB_PASSWORD’, ‘root’); //database password
define(‘DB_HOST’, ‘localhost:8889’); //hostname