Ryanfitzer: it was closely related to that thread, yes. Because Apple moved the socket file, WP threw out an error with some misleading help offered…Whoops! 🙂
Suggestion for future releases…one of the help items should probably be to check that your socket file is located where WP is looking for it to be located.
I resolved this in the wp-config.php file by altering a line to read,
define(‘DB_HOST’, ‘localhost:/tmp/mysql.sock’); // 99% chance you won’t need to change this value
Then I re-ran the install link and WP came up as if nothing were wrong.
Thanks for the replies to my plea for assistance!!