Fatal error: Call to undefined function icl_content_fix_links_in_all_dirty_nodes()

I get the following error when activating the Translation management core module:

Fatal error: Call to undefined function icl_content_fix_links_in_all_dirty_nodes() in /www/htdocs/drupal6/sites/all/modules/translation_management/icl_core/icl_core.module on line 178

using the following:
PHP Version 5.2.12-nmm2
Drupal 6.22
i18n 6.x-1.9
Translation Management 6.x-1.25