tutorfield dependencies issuie

Have just installed blank drupal 7.17 and added Mechanical Tutor module to it. Tutor question field along with Mechanical Tutor API.
Created a custom content type and added a Tutor question field to it. The field was added though drupal crashed (whitescreen) on editing field settings page. Apache error log says:

PHP Fatal error: Call to undefined function ctools_include() in /var/www/dict/sites/all/modules/contrib/tutor/tutor.module

So there should be added a dendency on ctools module in 'Tutor question field' module in order to avoid such crashes.
Thnx