I've been working with this plugin for several hours now, and it just doesn't seem to be doing anything. It could be that it's not compatible with the latest version of WP, but that seems unlikely since it was released so recently. I've installed and activated the plugin, and I know it's running. Then I've dropped the example code in my functions.php file
<?php x_add_metadata_field( 'field-1', 'post' ); ?>
and I know that file is loading correctly, but the fields are not showing up in my add post page.
When trying to debug the plugin, I've noticed that it tends to hang up when verifying whether or not my objects (I've tried 'post' and 'page') are registered. If I try to bypass that test, I get errors with the array_key_exists function.
Any help would be greatly appreciated! Thanks!