Originally Posted by Points
I don't use calibre for library functions--just for conversions--and wanted to know what that file was before making manual changes to the epub I created. I'm so glad you didn't take an arrogant, superior tone and make your post come off like a putdown.
I am not a mind reader. (and I have another 8 years of computer usage on you. A PDP-8L )
Newbies (to calibre) are used to making changes to file names. Part
of the Database is the File. Change that and the linkage is broken.