My text field is not saving the text. I then read this thread https://piklist.com/support/topic/editor-field-not-saving-data/. If I remove the scope parameter, the warning disappears. However, then the text is saved to the postmeta table, which is not what I want. It is the post_content field, and I want it saved to the posts table.
This is how I set the wysiwyg field:

piklist( 'field', array(
		'type' => 'editor',
		'scope' => 'post',
		'field' => 'post_content',
		'label' => 'Evt. tekst besked',
		'value' => '',
		'options' => array (
			'wpautop' => true,
			'media_buttons' => false,
			'tabindex' => '',
			'editor_css' => '',
			'editor_class' => '',
			'teeny' => false,
			'dfw' => false,
			'tinymce' => true,
			'quicktags' => true
		)
	) );

Hi Steve.
The custom post type is called “invoice”. No the default editor is not visible. I have not set it to support it in the code.

$post_types['invoice'] = array(
		'labels' 				=> $labels,
		'title' 				=> __( 'Enter a new Demo Title' ),
		'publicly_queryable' 	=> true,
		'exclude_from_search'   => true,
		'map_meta_cap' 			=> true,
		'capability_type' 		=> array('invoice', 'invoices'),
		'public' 				=> true,
		'hierarchical'          => false,
		'rewrite' 				=> array( 'slug' => 'faktura', 'with_front' => true, 'pages' => true ),
		'supports' => array(
			'author',
			'revisions',
			'title',
			'comments',
		)
);
	return $post_types;

@smallgreenpinky, I don’t think you are being ignored. My problem is identical to mine and I have given you a possible solution. Steve is trying to help by getting some more info. 🙂