Notice: Undefined index: #options in form_process_checkboxes()

I got this notice, which broke using settings for a CSV export, until I commented out the following lines:

views_data_export_plugin_style_export_csv.inc
lines 90-98

    $form['newline_replacement'] = array(
      '#prefix' => '<div><div id="edit-options-newline-replacement">',
      '#suffix' => '</div></div>',
      '#type' => 'textfield',
      '#title' => t('Replacement'),
      '#default_value' => $this->options['newline_replacement'],
      '#process' => array('form_process_checkboxes', 'ctools_dependent_process'),
      '#dependency' => array('edit-style-options-replace-newlines' => array(TRUE)),
    );