This article is about Flash publication.
Some pages can fail with converting to SWFs because of complex vector effects used on the pages.
Please try to use the following settings:
While importing to swf you can select “Rasterize” / Vector Shapes or Text option in Settings window. It will flatten all complex graphics and make your PDF page compatible with SWF file format.
If this does not help, you can re-export the PDF file in the PDF creation tool as a PostScript document and then convert the resulted .ps file back to PDF. This should neutralize complex effects on the pages and let them convert correctly.