[Aussiecubs]

Thank you Theducks for taking the time to reply and for your insight in to this problem. It is much appreciated.

Now you have explained to me the existence of this feature, I am left with a bit of a mystery of how I finished up with 117 empty book entries.

I have never created an empty book entry as such. The only way I have ever added a new book to Calibre is by firstly, physically obtaining the book in an .epub or .mobi format and then secondly, using the Add Books function to import and add the book to Calibre. This is usually done in a batch of say 5 or 10 or 20 books at a time. So I know for sure all of the books existed in an .epub or .mobi format when each entry was first created.

Having been created in this manner, it seems improbable that I have some how subsequently physically deleted the books from the folders where they resided. I simply have never gone into the files directory with a file browser and stared poking around to give me the opportunity to intentionally or accidentally start deleting various files.

I would also have had to have done this 117 times in 117 different physical locations, which again seems improbable.

Further, I use GoodSync to do a regular one way backup of my Calibre folder to another computer and to Dropbox.

Even if I had somehow or other accidentally physically deleted the .epub or .mobi files at the source or my computer system somehow or other did it without my active involvement, when doing my backups GoodSync would have warned me that the files no longer exist when it gives me the option of removing files from the target directory that no longer exist in the source directory. This has never happened. I only ever run GoodSync manually, so I review what it is about to do to ensure I don't have any autosyncing disasters.

So I am left with quite a mystery about how I arrived at the point of now having 117 empty book entries in my library. Any suggestions?