Install any qtype plugin from the plugins DB (e.g. https://moodle.org/plugins/qtype_oumultiresponse ). Note: If using MDK mdk plugin install qtype_oumultiresponse Go to a course Create a question of that type. Create a question of a standard type like true-false. Delete the folder of the question type plugin. e.g. in your moodle root folder: " rm -rf question/type/oumultiresponse " Upgrade your Moodle site " php admin/cli/upgrade " Try to view the question bank. Verify that the question bank shows up and you can do things with the true/false question you made.