Re-launch of CP5 project in LMS fails

Hi all,

I'm having an issue re-launching a CP5 project in an LMS. Adobe support has reproduced the problem and are working on it, but I wanted to share this issue in case others run into it.

The problem occurs when:

1. launch the project

2. answer a quiz question

3. manually navigate backwards

4. close the project

5. try to re-launch the project

==> the project never initializes and you just get the gray "Loading..." screen

There is a Flash error that I was able to capture that contains the following:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
                at mmquizzingv4_as3.mmquizclasses::QuizController/getQuestionsForSlideContainer()
                at mmquizzingv4_as3.mmquizclasses::QuizController/getQuestionFromNumInQuiz()
                at mmquizzingv4_as3.mmquizclasses::QuestionScore/restoreState()
                at mmquizzingv4_as3.mmquizclasses::QuizController/restoreState()
                at mmquizzingv4_as3.mmquizclasses::PlaybackController/restoreQuizState()
                at mmquizzingv4_as3.mmquizclasses::PlaybackController/doPollRestoreQuizState()
                at Function/http://adobe.com/AS3/2006/builtin::apply()
                at SetIntervalTimer/onTimer()
                at flash.utils::Timer/_timerDispatch()
                at flash.utils::Timer/tick()

If I set "Never Send Resume Data" to On and re-publish, the issue does not occur. So this is a temporary fix. Although, with this setting, one always ends up at slide 1 when they resume the project.

Will post more information if Adobe Support is able to identify the cause and fix.