[jpfromct]

Thanks for your quick reply. I opened the epub file using Text Edit and I didn't see OPF anywhere? Is there another way to "look inside" the file?

I did see a bunch of stuff that seemed to reference Adobe:

urn:uuid:5e575b6c-38c0-4659-8a52-4e3896a63d73 urn:uuid:58ab3f77-369f-4857-a7ee-163c5ff6883f application/epub+zip standalone urn:uuid:4dab8e30-9e5f-4638-92ac-c1c376bfc95c ContentReserveID:84A1A1C5-DF9D-4FF3-8D6F-7E8219167BD5-410 https://nasigningservice.adobe.com/licensesign http://acsepub.contentreserve.com/fulfillment