Initally when I installed QandA, the java animation did not work, nor did the post-link-through to go to the QandA post page if Java wasn't working (the links showed as wordpress/?p=nnn, and that drew a 404 object not found).
Dalton, the author made a code-fix that resolved the 404 errors I was getting, and that is working.
The non-working java problem was fixed by adding a missing call to
wp_footer(); to the theme's footer.php page. Dalton has an FAQ about that:
NOW - happily the QandA plugin works perfectly.