Reported by Ivan and others, in the forum: http://moodle.org/mod/forum/discuss.php?d=156605#p885144
" by Ivan Kosak - Friday, 18 May 2012, 02:51 PM
I installed new 2.2.3+ Moodle on brand new site and this question doesnt work with new version of Moodle.
Can you upgrade this plugin for 2.2.3? "
"..how to write a question type that works with the new Moodle question engine, the question engine introduced with Moodle 2.1.."