Can't save groups anymore

Hi Anh Tran,

I too have a problem saving groups all in a sudden. I have groups with a few textfields and one imagefield.

I add a new page and can add a group, when I add a second group it overrides the first group and adds the image. So instead of two groups with each its own image (a logo) I get one group with the two images attached.

I checked the forum and cleared the cache to see if it was the javascript problem but that doesn't help.

Here's the code I use to define the field:

// METABOX: FOOD FESTIVAL
$meta_boxes[] = array(
	'title' => 'Foodfestivals toevoegen',
	'post_types' => array( 'page' ),
	
	// Register this meta box for posts matched below conditions
		'include' => array(
			// With all conditions below, use this logical operator to combine them. Default is 'OR'. Case insensitive. Optional.
			'relation' => 'OR',

			// List of post parent IDs. Alleen toevoegen als parent ID 81 (foodfestivals) is
			'parent'       => array( 81 ),
		),

	'fields' => array(
		// Group
		array(
			'name' => 'Food festival', // Optional
			'id' => 'ff_id',
			'type' => 'group',
			'clone'  => true, // Clone whole group? 
			//'sort_clone' => true, // Drag and drop clones to reorder them? 

			// List of sub-fields
			'fields' => array(
				array(
					'name' => '<strong>Naam festival</strong>',
					'id' => $prefix . 'ff_name',
					'type' => 'text',
				),
				array(
					'name' => '<strong>Website</strong>',
					'id' => $prefix . 'ff_url',
					'type' => 'text',
				),
				array(
					'name' => '<strong>Plaats</strong>',
					'id' => $prefix . 'ff_place',
					'type' => 'text',
				),
				array(
					'name' => '<strong>Datum</strong>',
					'id' => $prefix . 'ff_date',
					'type' => 'text',
				),
				array(
					'name'	=> '<strong>Visual festival</strong>',
					'id'	=> $prefix . 'ff_visual',
					'type'	=> 'image_advanced',
					'desc'	=> 'Visual (128 x 128 px).'
				),
				// Other sub-fields here
			),
		),
	),
);