Can you please verify whether you are seeing a "halt" or a "crash" ?
If its a crash, are you seeing any exception thrown or an error thrown or the browser getting closed (not responding)??
If its a halt, are you not able to move back or forh or are you not able to relaunch it ??
It is a halt. As soon as I select an answer on the quiz page, the presentation appears to stop running. I don’t get any acknowledgement response, and I can’t scroll to a previous page. If I click the refresh button in my browser (firefox), the presentation re-launches from slide 1.
I am not able to reproduce this issue on my system.
Do you see the same issue on launching the viewer.swf ?? try running it on different browser as well
Also if you could share the presentation, it would be helpful to find the issue.