undefined function _views_bonus_export_shared_preprocess()

Hello!
I try to export view results into CSV or XML file.
I create page view as a table and set "/tut_ua_csv" as the path - it looks good.
Then I add feed display, set style as "CSV file" and set "/tut_ua_csv/feed" as the path, set "Attach to: Page".

Got a popup window:

An error occurred at /admin/build/views/ajax/preview/tut_ua_csv.

Error Description: 
Fatal error:  Call to undefined function _views_bonus_export_shared_preprocess() in /var/www/drupal/sites/all/modules/views_bonus/export/views_bonus_export.theme.inc on line 75

I search for a body of the _views_bonus_export_shared_preprocess() function and nothing found in /var/www/drupal/sites/all/modules/views_bonus/export/views_bonus_export.theme.inc