Help! One of my quizzes is corrupted!

I keep getting the following error whenever I try to copy or edit a quiz that was working just this Spring.  Does anyone have any advice?  What have I done?

Thanks!

Jeff

ERROR

blackboard/apis/assessment/OrderingQuestionWrapper$OrderingAnswerList

For reference, the Error ID is adc4169a-1c03-4fb0-909b-455298c04688.

Tuesday, May 29, 2018 3:30:51 PM EDT