Unfortunately, that makes WPDM completely irrelevant for my business as I am selling large PDF files and my clients require bookmarks.
Before I seek out other solutions, is there a way to configure the plugin to add a fixed set of bookmarks to the document after regeneration? I see that FPDF does have a bookmarks function: http://www.fpdf.org/en/script/script1.php . Is there a way to tweak the plug-in?