when you place SWF file in Indesign, are you check on "Play on page load"
Yes, I do that in the Media section.
Is the SWF work on the browser?
Can you share on of SWF file? you can upload to dropbox.
I see now, My default PDF reader was set to preview (MAC). I opened the file with Acrobat and all works fine.
Thank you for looking in to this.