ACF Import/Export fail

acf.php

<?php
register_field_group(array (
    'id' => 'acf_sports-child',
    'title' => 'Sports Child',
    'fields' => array (
      array (
        'key' => 'field_52a06ed37ed04',
        'label' => 'Content',
        'name' => '',
        'type' => 'tab',
      ),
      array (
        'key' => 'field_52a06f2115013',
        'label' => 'Title',
        'name' => 'title',
        'type' => 'text',
        'instructions' => 'Leave empty to use post title',
        'default_value' => '',
        'placeholder' => '',
        'prepend' => '',
        'append' => '',
        'formatting' => 'html',
        'maxlength' => '',
      ),
      array (
        'key' => 'field_52a068a9cc979',
        'label' => 'Subtitle',
        'name' => 'subtitle',
        'type' => 'text',
        'default_value' => '',
        'placeholder' => '',
        'prepend' => '',
        'append' => '',
        'formatting' => 'html',
        'maxlength' => '',
      ),
      array (
        'key' => 'field_52a06f2d15014',
        'label' => 'Content',
        'name' => 'content',
        'type' => 'wysiwyg',
        'default_value' => '',
        'toolbar' => 'basic',
        'media_upload' => 'no',
      ),
      array (
        'key' => 'field_52a06fd9e18f4',
        'label' => 'Image',
        'name' => 'image',
        'type' => 'image',
        'save_format' => 'id',
        'preview_size' => 'thumbnail',
        'library' => 'all',
      ),
      array (
        'key' => 'field_52a07039e18f6',
        'label' => 'Image Size',
        'name' => 'image_size',
        'type' => 'select',
        'choices' => array (
          'small' => 'Small',
          'medium' => 'Medium',
          'big' => 'Big',
          'huge' => 'Huge (100% wide)',
        ),
        'default_value' => 'medium',
        'allow_null' => 0,
        'multiple' => 0,
      ),
      array (
        'key' => 'field_52a07059e18f7',
        'label' => 'Image Alignment',
        'name' => 'image_alignment',
        'type' => 'select',
        'choices' => array (
          'auto' => 'Auto (oposite of previous image)',
          'alignleft' => 'Left',
          'alignright' => 'Right',
        ),
        'default_value' => 'auto',
        'allow_null' => 0,
        'multiple' => 0,
      ),
      array (
        'key' => 'field_52a06ff3e18f5',
        'label' => 'Gallery',
        'name' => 'gallery',
        'type' => 'post_object',
        'post_type' => array (
          0 => 'my_galleries',
        ),
        'taxonomy' => array (
          0 => 'all',
        ),
        'allow_null' => 1,
        'multiple' => 0,
      ),
      array (
        'key' => 'field_52a06f73b0276',
        'label' => 'Links',
        'name' => 'links',
        'type' => 'repeater',
        'sub_fields' => array (
          array (
            'key' => 'field_52a06f8795aff',
            'label' => 'URL',
            'name' => 'url',
            'type' => 'text',
            'column_width' => '',
            'default_value' => '',
            'placeholder' => 'http://',
            'prepend' => '',
            'append' => '',
            'formatting' => 'html',
            'maxlength' => '',
          ),
          array (
            'key' => 'field_52a06f8d95b00',
            'label' => 'Anchor',
            'name' => 'anchor',
            'type' => 'text',
            'column_width' => '',
            'default_value' => '',
            'placeholder' => '',
            'prepend' => '',
            'append' => '',
            'formatting' => 'html',
            'maxlength' => '',
          ),
        ),
        'row_min' => 0,
        'row_limit' => '',
        'layout' => 'table',
        'button_label' => 'Add Link',
      ),
      array (
        'key' => 'field_52a06fa8847f2',
        'label' => 'Show Social Icons',
        'name' => 'show_social_icons',
        'type' => 'true_false',
        'instructions' => 'You can set sharing meta data (such as thumb, description, etc) on parent post.',
        'message' => '',
        'default_value' => 0,
      ),
      array (
        'key' => 'field_52a068bfcc97a',
        'label' => 'Has Dark Background?',
        'name' => 'is_dark_section',
        'type' => 'true_false',
        'message' => '',
        'default_value' => 0,
      ),
      array (
        'key' => 'field_52a06eb4baae0',
        'label' => 'Section Settings',
        'name' => '',
        'type' => 'tab',
      ),
      array (
        'key' => 'field_52a0693acc97c',
        'label' => 'Section Title',
        'name' => 'section_title',
        'type' => 'text',
        'default_value' => '',
        'placeholder' => '',
        'prepend' => '',
        'append' => '',
        'formatting' => 'html',
        'maxlength' => '',
      ),
      array (
        'key' => 'field_52a06952cc97d',
        'label' => 'Section Subtitle',
        'name' => 'section_subtitle',
        'type' => 'text',
        'default_value' => '',
        'placeholder' => '',
        'prepend' => '',
        'append' => '',
        'formatting' => 'html',
        'maxlength' => '',
      ),
    ),
    'location' => array (
      array (
        array (
          'param' => 'post_type',
          'operator' => '==',
          'value' => 'my_sports',
          'order_no' => 0,
          'group_no' => 0,
        ),
        array (
          'param' => 'page_type',
          'operator' => '==',
          'value' => 'child',
          'order_no' => 1,
          'group_no' => 0,
        ),
      ),
    ),
    'options' => array (
      'position' => 'normal',
      'layout' => 'default',
      'hide_on_screen' => array (
      ),
    ),
    'menu_order' => -1,
  ))