This question came in last week:
Question: I have a question about Adobe Captivate 5 and Articulate Presenter '09. After adding Captivate 5 SWFs into Articulate Presenter, the SWFs do not play. Everything worked with our Captivate 4 SWFs. Do you know if there are compatibility issues?
Answer: The issue is with AS2 vs. AS3. Captivate 5 SWFs only publish in AS3. Articulate Presenter requires AS2. Review this article for details.