Problems with file type field of node
Answer for my problems:

function hook_menu_alter(&amp;$aItems) {
    $sNodePath = drupal_get_path('module', 'node');

    $aItems['file/ajax']['file path']    = $sNodePath;
    $aItems['file/ajax']['file']         = 'node.pages.inc';
    $aItems['system/ajax']['file path']  = $sNodePath;
    $aItems['system/ajax']['file']       = 'node.pages.inc';
}