Right. And also the more extensive discussion on thread 3757718. Only the DRM free solution worked for few but not me. My file sizes and audio samples are quite small. I was working on a ticket, uploaded a corrections which validated and published OK and then noted that iBooks_Author had re-inserted two pages that I had previously deleted. When I tried to upload a correction again, I started getting this error that is reported in these threads.
I wonder if they have to enable an update reload through their review process. I tried resubmitting from iBooks and keying in all the metadata again but it failed the same way. Some of your replies to previous posts seem to indicate that you've found "updates" should be submitted as new versions. If that is true, what makes a new version? A new ISBN ?
Thanks for your help..