[Plugin: Simple Page Ordering] Custom post types and query orderby

Hey there! Great plugin and I do love it a lot.

I’m having trouble with a custom post type setup. The code for the custom post type is below:

/* Employees */
	$labels = array(
		'name'               => __( 'Employees' ),
		'singular_name'      => __( 'Employee' ),
		'add_new'            => __( 'Add New Employee' ),
		'add_new_item'       => __( 'Add New Employee' ),
		'view'               => __( 'View Employee' ),
		'view_item'          => __( 'View Employee' ),
		'search_items'       => __( 'Search Employees' ),
		'not_found'          => __( 'No employees found' ),
		'not_found_in_trash' => __( 'No employees in Trash' ),
	);
	$args = array(
		'labels'            => $labels,
		'public'            => true,
		'show_in_nav_menus' => false,
		'has_archive'       => true,
		'heirarchical'      => true,
		'supports'          => array( 'title','editor','thumbnail','page-attributes')
	);
	register_post_type('employees',$args);

This is wrapped in a function that is add_action()’ed to “init.”

There are two issues that are only associated with the custom post type main list editing page. The first error is minor but might help in diagnosing the others: a couple of notices that show up when I have errors turned on.

I get this notice at the top of the page:

Notice: Undefined index: orderby in /localhost/wp-content/plugins/simple-page-ordering/simple-page-ordering.php on line 57

And I get this one just above the sorting options:

Notice: Undefined index: orderby in /localhost/wp-content/plugins/simple-page-ordering/simple-page-ordering.php on line 159

After that, the sorting function itself isn’t automatically turned on. I can click on “Sort by Order” and the errors disappear, the pages are draggable, and it saves my changes – but it only lasts until I navigate away from the page. I have to click that button every time I load that screen if I want it to work. It’s a minor annoyance, but I don’t want to have to teach my client something that should Just Work.

Any suggestions, fixes, help?

http://ww.wp.xz.cn/extend/plugins/simple-page-ordering/