The view page works, but logs show mySql error

I have the following view for comments page on my site:

 $view = new stdClass();
  $view->name = 'comments';
  $view->description = 'All comments';
  $view->access = array (
);
  $view->view_args_php = '';
  $view->page = TRUE;
  $view->page_title = '';
  $view->page_header = '';
  $view->page_header_format = '1';
  $view->page_footer = '<hr />';
  $view->page_footer_format = '3';
  $view->page_empty = '';
  $view->page_empty_format = '1';
  $view->page_type = 'table';
  $view->url = 'comments/recent';
  $view->use_pager = TRUE;
  $view->nodes_per_page = '20';
  $view->menu = TRUE;
  $view->menu_title = 'All comments';
  $view->menu_tab = TRUE;
  $view->menu_tab_weight = '10';
  $view->menu_tab_default = TRUE;
  $view->menu_tab_default_parent = NULL;
  $view->menu_tab_default_parent_type = 'normal';
  $view->menu_parent_tab_weight = '0';
  $view->menu_parent_title = '';
  $view->sort = array (
    array (
      'tablename' => 'comments',
      'field' => 'timestamp',
      'sortorder' => 'DESC',
      'options' => 'normal',
    ),
  );
  $view->argument = array (
  );
  $view->field = array (
    array (
      'tablename' => 'comments',
      'field' => 'comment',
      'label' => '',
    ),
    array (
      'tablename' => 'node',
      'field' => 'view',
      'label' => '',
    ),
    array (
      'tablename' => 'node_counter',
      'field' => 'totalcount',
      'label' => '',
    ),
    array (
      'tablename' => 'comments',
      'field' => 'add',
      'label' => '',
    ),
    array (
      'tablename' => 'node_comment_statistics',
      'field' => 'comment_count',
      'label' => '',
      'handler' => 'views_handler_comments_with_new',
    ),
  );
  $view->filter = array (
    array (
      'tablename' => 'node',
      'field' => 'status',
      'operator' => '=',
      'options' => '',
      'value' => '1',
    ),
    array (
      'tablename' => 'node_comment_statistics',
      'field' => 'comment_count',
      'operator' => '>',
      'options' => '',
      'value' => '0',
    ),
  );
  $view->exposed_filter = array (
  );
  $view->requires = array(comments, node, node_counter, node_comment_statistics);
  $views[$view->name] = $view;

When visiting www.mysite.com/comments it shows correctly what I wanted, but logs show several errors:

Error #1:

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 query: node_load SELECT n.nid, n.vid, n.type, n.status, n.created, n.changed, n.comment, n.promote, n.sticky, r.timestamp AS revision_timestamp, r.title, r.body, r.teaser, r.log, r.format, u.uid, u.name, u.picture, u.data FROM node n INNER JOIN users u ON u.uid = n.uid INNER JOIN node_revisions r ON r.vid = n.vid WHERE  in /home/mysite/public_html/includes/database.mysql.inc on line 172.

Error #2:

	implode() [<a href='function.implode'>function.implode</a>]: Bad arguments. in /home/mysite/public_html/modules/node/node.module on line 525.

Error #3:

Invalid argument supplied for foreach() in /home/mysite/public_html/modules/node/node.module on line 521.

What is wrong in my views? What could I change in the views code to avoid these error messages?

Thanks!