[jhowell]

Originally Posted by Ma'am-I-Am

I just had something interesting happen. I imported a book which showed up as KFX-ZIP - and it opened!

A failure to remove DRM is the most common reason to end up with KFX-ZIP format, but it is not the only reason that can happen.

A calibre debug log would be helpful in discovering the cause of the problem. Here are instructions copied from the DeDRM FAQ: Remove the DRMed book from calibre. Click the Preferences drop-down menu and choose 'Restart in debug mode'. Once calibre has re-started, import the problem ebook. Now close calibre. A log will appear that you can copy and paste.

Originally Posted by Ma'am-I-Am

The MD file also imported, but the book is viewable even without it.

You will see a MD file if you ask calibre to import everything in a Kindle for PC book folder. In this case K4PC uses the .md file extension for a metadata file but calibre see that extension as being Markdown format. If you do not have a need for Markdown you can prevent this by going to Preferences, Adding books, Adding actions, Rules to filter added files, Add rule, Ignore if the filename ends with .md, Ok, Apply.

Originally Posted by Ma'am-I-Am

I'm just posting this because I've never heard of this happening before. Has it?

It does happen occasionally but not to me. It would be good to have a log in order to diagnose it.

Originally Posted by Ma'am-I-Am

Still not getting descriptions imported, though.

Again, I would need to see a case where a book that actually contains a description in KFX format fails to import with it. Most books do not contain that metadata.

Originally Posted by GeorgK

Failed on my side of the world

Originally Posted by bkennelly

I see that regularly. I have been assuming that it happens for books without DRM.

Again, a log would be helpful, but only if the book converts successfully without a DRM error. Problems with DRM removal should be reported instead to NoDRM's GitHub.