Tim - thanks for your reply. I thought of the permission issue also. I have gone into the "check permissions" screen for both myself as administrator, and for a person in the teaching role.....and in both instances "moodle/question:add" is set to YES.
Any other ideas are very welcome....we still haven't hit upon the reason for not being able to see the popup "question types" when trying to add a new question to either a new quiz or an existing quiz.
Thanks!
Jim Murray