Installed Update 5 and problems still in Quizmaker

I installed Studio update 5 last night and my Quizmaker and Engage files won't open when opening them in PP.  On Friday they would open but they wouldn't open last night until I installed the update.  

Any solutions?  I don't want to open the Quizmaker files outside of the PP b/c I'm afraid they won't be current (as indicated by the last date modified) and I'll lose all of the work I've done on them.

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