blank page when trying to change upload directory
As pointed out above, you need to see the error reporting. Add to the top of wp-config.php:php error_reporting(E_ALL); ini_set('display_errors', 1);
If that's not working, find define('WP_DEBUG', false); and set the value to true
This might also help, add to the top of wp-config to pipe errors to err.log at your document root:@ini_set( 'log_errors', 'On' );@ini_set( 'display_errors', 'Off' );@ini_set( 'error_log', $_SERVER['DOCUMENT_ROOT'] . '/err.log' );