Steps to reproduce:

1. Create a new quiz.
2. Create a new category "Essay questions".
3. Create two essay questions in that category.
4. Add one random question to the quiz, picking from that category.
5. Preview the quiz.
6. Type an answer into the HTML editor that includes pressing ENTER.
7. Click next.

Actual result:

Can not find wrapped question random30-
asdf

asdf

Notice: Trying to get property of non-object in /Users/tim/Documents/workspace/moodle_head/question/type/random/questiontype.php on line 249
Wrapped state missing

Notice: Trying to get property of non-object in /Users/tim/Documents/workspace/moodle_head/question/type/random/questiontype.php on line 264

Notice: Undefined index: in /Users/tim/Documents/workspace/moodle_head/question/type/random/questiontype.php on line 264

Fatal error: Call to a member function get_question_options() on a non-object in /Users/tim/Documents/workspace/moodle_head/question/type/random/questiontype.php on line 265