An illegal choice has been detected

Actually I'm getting the same failure using API bridge too!

Thanks for your reply! I was importing a content type from the same type to make it in another type. For example a Story Type to a Message Type and here how it looks:

$content['type']  = array (
  'name' => 'Natsarim Video Message',
  'type' => 'natsarim_vmessage',
  'description' => 'A story, similar in form to a page, is ideal for creating and displaying content that informs or engages website visitors. Press releases, site announcements, and informal blog-like entries may all be created with a story entry. By default, a story entry is automatically featured on the site\'s initial home page, and provides the ability to post comments.',
  'title_label' => 'Title',
  'body_label' => 'Body',
  'min_word_count' => '0',
  'help' => '',
  'node_options' => 
  array (
    'status' => true,
    'revision' => true,
    'promote' => false,
    'sticky' => false,
  ),
  'node_expire' => '',
  'node_expire_max' => '',
  'node_expire_required' => false,
  'language_content_type' => '0',
  'upload' => '1',
  'node_default_display_page' => '0',
  'node_default_display_teaser' => '0',
  'show_preview_changes' => true,
  'show_diff_inline' => false,
  'enable_revisions_page' => true,
  'ffp_upload' => 
  array (
    'file_path' => '',
    'file_path_cleanup' => 
    array (
      'file_path_pathauto' => 0,
      'file_path_tolower' => 0,
      'file_path_transliterate' => 0,
    ),
    'file_name' => '[filefield-onlyname-original].[filefield-extension-original]',
    'file_name_cleanup' => 
    array (
      'file_name_pathauto' => 0,
      'file_name_tolower' => 0,
      'file_name_transliterate' => 0,
    ),
    'file_alias' => 'sites/drupal6c.tentofappointment.com/files/[filefield-onlyname-original].[filefield-extension-original]',
    'file_alias_display' => 0,
    'file_alias_cleanup' => 
    array (
      'file_alias_pathauto' => 0,
      'file_alias_tolower' => 0,
      'file_alias_transliterate' => 0,
    ),
    'retroactive_update' => '',
    'active_updating' => 0,
  ),
  'old_type' => 'natsarim_vmessage',
  'orig_type' => '',
  'module' => 'node',
  'custom' => '1',
  'modified' => '1',
  'locked' => '0',
  'image_attach' => '0',
  'image_attach_maximum' => '0',
  'image_attach_size_teaser' => 'thumbnail',
  'image_attach_size_body' => 'thumbnail',
  'nodewords_edit_metatags' => 1,
  'nodewords_metatags_generation_method' => '0',
  'nodewords_metatags_generation_source' => '2',
  'nodewords_use_alt_attribute' => 1,
  'nodewords_filter_modules_output' => 
  array (
    'imagebrowser' => false,
    'img_assist' => false,
  ),
  'nodewords_filter_regexp' => '',
  'comment' => '2',
  'comment_default_mode' => '4',
  'comment_default_order' => '1',
  'comment_default_per_page' => '50',
  'comment_controls' => '3',
  'comment_anonymous' => 0,
  'comment_subject_field' => '1',
  'comment_preview' => '1',
  'comment_form_location' => '0',
  'context_node' => 
  array (
    'anonymous_ui' => false,
    'authenticated_ui' => false,
    'did_you_know_ui' => false,
    'front_ui' => false,
  ),
  'context_node_default' => false,
  'custom_breadcrumbs_show_form_table' => 1,
  'scheduler_publish_enable' => 0,
  'scheduler_publish_touch' => 0,
  'scheduler_publish_required' => 0,
  'scheduler_publish_revision' => 0,
  'scheduler_unpublish_enable' => 0,
  'scheduler_unpublish_required' => 0,
  'scheduler_unpublish_revision' => 0,
  'skinr_settings' => 
  array (
    'comment_group' => 
    array (
      'garland' => 
      array (
        'advanced' => 
        array (
          '_additional' => '',
          '_template' => '',
        ),
      ),
      'mix_and_match' => 
      array (
        'widgets' => 
        array (
          'grid-width' => 
          array (
          ),
          'fusion-content-alignment' => '',
          'background-color' => '',
          'link-color' => '',
        ),
        'advanced' => 
        array (
          '_additional' => '',
          '_template' => '',
        ),
      ),
    ),
    'node_group' => 
    array (
      'garland' => 
      array (
        'advanced' => 
        array (
          '_additional' => '',
          '_template' => '',
        ),
      ),
      'mix_and_match' => 
      array (
        'widgets' => 
        array (
          'grid-width' => 
          array (
          ),
          'fusion-content-alignment' => '',
          'fusion-float-imagefield' => '',
          'background-color' => '',
          'link-color' => '',
        ),
        'advanced' => 
        array (
          '_additional' => '',
          '_template' => '',
        ),
      ),
    ),
  ),
);
$content['fields']  = array (
  0 => 
  array (
    'label' => 'Image',
    'field_name' => 'field_image',
    'type' => 'filefield',
    'widget_type' => 'imagefield_widget',
    'change' => 'Change basic information',
    'weight' => '31',
    'file_extensions' => 'png gif jpg jpeg',
    'progress_indicator' => 'bar',
    'file_path' => '',
    'max_filesize_per_file' => '',
    'max_filesize_per_node' => '',
    'max_resolution' => 0,
    'min_resolution' => 0,
    'custom_alt' => 0,
    'alt' => '',
    'custom_title' => 0,
    'title_type' => 'textfield',
    'title' => '',
    'use_default_image' => 0,
    'default_image_upload' => '',
    'default_image' => NULL,
    'description' => 'Upload the image of this video.',
    'ffp_field_image' => 
    array (
      'file_path' => 'images/video',
      'file_path_cleanup' => 
      array (
        'file_path_pathauto' => 0,
        'file_path_tolower' => 1,
        'file_path_transliterate' => 0,
      ),
      'file_name' => '[filefield-onlyname-original].[filefield-extension-original]',
      'file_name_cleanup' => 
      array (
        'file_name_pathauto' => 0,
        'file_name_tolower' => 1,
        'file_name_transliterate' => 0,
      ),
      'file_alias' => 'sites/drupal6.tentofappointment.com/files/[filefield-onlyname-original].[filefield-extension-original]',
      'file_alias_display' => 0,
      'file_alias_cleanup' => 
      array (
        'file_alias_pathauto' => 0,
        'file_alias_tolower' => 1,
        'file_alias_transliterate' => 0,
      ),
      'retroactive_update' => '',
      'active_updating' => 0,
    ),
    'group' => false,
    'required' => 0,
    'multiple' => '0',
    'list_field' => '0',
    'list_default' => 1,
    'description_field' => '0',
    'op' => 'Save field settings',
    'module' => 'filefield',
    'widget_module' => 'imagefield',
    'columns' => 
    array (
      'fid' => 
      array (
        'type' => 'int',
        'not null' => false,
        'views' => true,
      ),
      'list' => 
      array (
        'type' => 'int',
        'size' => 'tiny',
        'not null' => false,
        'views' => true,
      ),
      'data' => 
      array (
        'type' => 'text',
        'serialize' => true,
        'views' => true,
      ),
    ),
    'display_settings' => 
    array (
      'label' => 
      array (
        'format' => 'hidden',
      ),
      'format' => 'default',
      'css-class' => 
      array (
      ),
      'region' => 'disabled',
      'ds_weight' => '-93',
      'full' => 
      array (
        'label' => 
        array (
          'format' => 'hidden',
        ),
        'format' => 'imagefield__cloud_zoom__Featured_Video__Featured_Video',
        'css-class' => '',
        'region' => 'disabled',
        'type' => 'filefield',
        'parent_id' => '',
        'field_id' => 'field_image',
        'label_value' => '',
        'exclude' => 1,
        'weight' => '-93',
      ),
      5 => 
      array (
        'format' => 'image_plain',
        'exclude' => 0,
      ),
      'teaser' => 
      array (
        'format' => 'image_plain',
        'exclude' => 0,
      ),
      4 => 
      array (
        'format' => 'image_plain',
        'exclude' => 0,
      ),
      2 => 
      array (
        'format' => 'image_plain',
        'exclude' => 0,
      ),
      3 => 
      array (
        'format' => 'image_plain',
        'exclude' => 0,
      ),
      'token' => 
      array (
        'format' => 'image_plain',
        'exclude' => 0,
      ),
    ),
  ),
);
$content['extra']  = array (
  'title' => '-5',
  'body_field' => '0',
  'revision_information' => '20',
  'author' => '20',
  'options' => '25',
  'comment_settings' => '30',
  'menu' => '-2',
  'book' => '10',
  'path' => '30',
  'attachments' => '30',
  'context_node' => '0',
  'custom_breadcrumbs' => '30',
  'nodewords' => '10',
);

I created an issue with CCK also hoping they could direct me to a solution, because it may be there problem.