[sgirsberger]

After making some small text corrections to an existing reflowable EPUB3 today, I ran it through epubcheck 3.0b5 again to ensure there were no errors, and there weren’t. I have tested earlier versions of this EPUB on the same iPad Pro and have had no problems with the file.

This time, however, every page of the book was blank. Cover displayed fine. No error messages with line references were presented for troubleshooting. There was no nav toc to access, either, but the pages could be turned as if they had content.

I deleted the EPUB, rebooted the iPad Pro, reloaded the EPUB, and the result was the same.

I then loaded the same EPUB onto my iPhone. It displays and functions perfectly in iBooks (4.12)— same iOS (10.3.3).

I loaded it onto two other iPads, one with an older iOS and older version of iBooks, and one the same iOS 10.3.3. It displays and functions perfectly.

I transferred it via AirDrop and via e-mail. Didn’t make any difference.

I have to conclude that this is an issue with the iPad Pro, perhaps?

Also need to point out that the MOBI file that was converted from this EPUB displays and functions perfectly on a Kindle Fire HD.

I’m attaching it here in case anyone has any clues. It was originally a print book done in InDesign CS-something in 2004. Yes, I know there is some CSS that is unnecessary, but it’s a book of lists, and doesn’t take long to load anyway. I’m really most concerned about why it’s working everywhere BUT the iPad Pro when it did before.

Your guidance is greatly appreciated!