Are you getting an error? If so, what is the error?
Have you tried launching PPT with admin rights and see if that works?
Is the PPT saved on your C drive? If not, move it there (you may want to do a save as to ensure all the Presenter content comes with it) and see if it will publish as expected.
SWF video is a very different thing to deal with than MP4, FLV or any of the other supported video types. I would recommend that you don't use SWF for video assets.
Thanks for the suggestions, I will try and see what happens, D