|
I looked at it, and there was indeed a case where using add multiple books per directory could cause the OPF file to generate an extra book (a bit of code copy pasted from the single book per directory code path). Fix will be in next release. You can either wait for it, or just use drag n' drop, ignore the duplicate warnings, delete the opf files or add folders that contain opf files as single book per directory, which will allow calibre to preserve the metadata from the opf file.
|