I have been previewing and "submitting" my quizzes before publishing to check for errors. My quizzes are a mix of multiple-choice, true/false, matching, and short essay questions. This week, when I was able to preview a quiz, but when trying to submit it I kept getting an error message. This happened multiple times. I had answered the short essay questions with "xxx". I had to publish the quiz in order to "preview" it. This has never happened before. I really do need to be able to preview and submit to check for errors! Can this be fixed please?
Here is a screen shot of the error message: