field_collection problem

<?php
require_once('/home/gauntlet/webapps/d7/sites/all/modules/field_collection/field_collection.migrate.inc');
function migrate_glegacy_migrate_api() {
  $api = array(
    'api' => 2,
  );
  return $api;
}

function refresh_gauntlet_database() {
    exec('/home/gauntlet/gauntlet_a_to_gauntlet_d7.sh');
}

class GauntletStoriesMigration extends Migration {
    public function __construct() {
        parent::__construct();
        $this->description = 'Migrate stories first.';

        $this->map = new MigrateSQLMap($this->machineName,
            array(
                'sid' => array(
                            'type' => 'int',
                            'length' => 15,
                            'unsigned' => FALSE,
                            'alias' => 's',
                            'not null' => FALSE
                )

            ),
            MigrateDestinationNode::getKeySchema()
        );


        $query = db_select('dbStory', 's');
        $query->leftJoin('dbBodytext', 'b', 's.sid = b.sid');

    //  $query->leftJoin(array('dbBodytext', 'dbAuthors', 'dbImages'), array('bt', 'a', 'i'), array('s.SID=bt.SID', 's.SID=a.SID', 's.SID=i.SID')); //begin merging tables, start with BodyTexts...
                /*  ->leftJoin('dbAuthors', 'a', 's.SID=a.SID') // Authors...
                    ->leftJoin('dbImages', 'i', 's.SID=i.SID') // Images...
                */
        $query->fields('s',
                            array(
                                'sid',
                                'Rank',
                                'Date',
                                'Section',
                                'GID',
                                'headline',
                                'Deck',
                                'Tab',
                                'HideOnIndexes',
                                'Special',
                                'Locked',
                                )
                            );
        $query->fields('b', array('storytext'));
    /*              ->fields('a', array('Author', 'Position'))
                    ->fields('i', array('File', 'Caption', 'Credit', 'Source'));*/
/*      $query->addExpression('GROUP_CONCAT(DISTINCT a.Author)', 'authors');
        $query->addExpression('GROUP_CONCAT(DISTINCT a.Position)', 'positions');
        $query->addExpression('GROUP_CONCAT(DISTINCT i.File)', 'images');
        $query->addExpression('GROUP_CONCAT(DISTINCT i.Caption)', 'captions');
        $query->addExpression('GROUP_CONCAT(DISTINCT i.Credit)', 'credits');
        $query->addExpression('GROUP_CONCAT(DISTINCT i.Source)', 'sources');*/
        $query->groupBy('s.sid');

        $this->source = new MigrateSourceSQL($query);
        $this->destination = new MigrateDestinationNode('article');

        $this->addFieldMapping('title', 'headline')
             ->description('Import headlines');
        $this->addFieldMapping('nid', 'sid')
             ->description('Preserve old SID as Drupal NID.');
        $this->addFieldMapping('is_new')
             ->defaultValue(TRUE);

        $this->addFieldMapping('body', 'storytext')
             ->arguments(array('format' => 'full_html'));
        // Since the excerpt is mapped via an argument, add a null mapping so it's
        // not flagged as unmapped
        $this->addFieldMapping(NULL, 'excerpt');
    }
}


class GauntletBylinesMigration extends GauntletStoriesMigration {
  public function __construct() {
    parent::__construct();
    $this->dependencies = array('GauntletStories');
    $query = db_select('dbAuthors', 'l');
    $query->fields('l', array(
      'aid',
      'sid',
      'author',
      'position',
    ));

    $this->source = new MigrateSourceSQL($query);
    $this->destination = new MigrateDestinationFieldCollection('field_bylines', array('host_entity_type' => 'node')); //changed 'hostEntityType' to 'host_entity_type'. Seems to have eliminated an error.
    $this->map = new MigrateSQLMap(
      $this->machineName,
      array(
        'aid' => array(
          'type' => 'int',
          'length' => 9,
          'not null' => TRUE,
          'alias' => 'l',
        ),
      ),
      MigrateDestinationFieldCollection::getKeySchema()
    );

    $this->addFieldMapping('host_entity_id', 'sid')->sourceMigration('GauntletStories');

    $this->addFieldMapping('field_byline_author', 'author');

    $this->addFieldMapping('field_byline_position', 'position');
  }

}