Quizzes no longer working - ppt97-2003 -> pptx2007
I have been updating some older work built with PPT 2003. When I open and save the ppt file as a pptx - 2007 file the Quizzes no longer work in the published output. I just get the spinning loader screen. The quizzes work fine however when I preview them. Engage interactions are all working ok in the published output.
I have removed and then reconnected the quizzes, thrown out the ppta file so that it re-created afresh with no luck so far. If I stick with the ppt2003 format when saving everything stays intact with the quizzes working.
I'd like to move the ppt file to a 2007 version but I'm not sure what to try next. Any ideas welcomed.