Manuscript Editor takes perfectly good EPUB files and makes them buggy. You can't get an ebook into the Nook Press system without dealing with Manuscript Editor. So if you still have a Pubit account, do everything from there, don't bother with the Nook Press interface.
Until/unless the software for Nook Press gets fixed, trying to fix and troubleshoot your files in NP is a waste of time.
For what it may or may not be worth, here is my suggestion. Go ahead and publish the ebook (if you can) with Pubit or NOOK Press, and read it with a NOOK, not the Previewer. If not satisfied, make corrections, republish and read it again with the NOOK. Ignore the Previewer.
In view of the Forum published difficulties encountered in attempting publication for the NOOK, and the decline in ebooks Reported purchased, both since NOOK Press, I question the wisdom of haqving anything new to do with NOOK Press at this time.
I have been and am a BandN supporter, but IF BandN wants to stay in the ebook business, then it is essential that BandN fix the new problems in publication and marketing introduced by NOOK Press. If this is not done, the ebook business of BandN must inevitably decline.
In Nookpress, prior to publishing a project/title, you are given the option of publishing 'the version you worked on in the editor' or 'the original epub file' . Try uploading/publishing the original epub file. Once it hits the shelves you can verify it working as desired on an actual device. Hope this helps
The one time I tried that, I still wound up with a garbled-up EPUB file for sale. I had to go into Pubit and resubmit the verified file.
That's why I'm telling people, If you want to sell an ebook on Barnes & Noble, avoid Nook Press at all costs, if you can.
Glad to see I am not the only one having issues with the "new" previewer. I say new because I have published more than 100 eBooks for NOOK and never had any problems until they came up with this bigger/better version. Now I can not get any file to upload and preview correctly; Word, ePub, html. You are lucky. The most I have ever gotten out of it are 2 images of the cover of my eBook. I wish they had left well enough alone.