[nono01]

i want to thank this community for being so passionate and quick to react, and thank LadyKate for her understanding and being so diplomatic !

Originally Posted by gbm

Your ebooks file have garbage meta data, I would say you have calibre set to read meta data on import from the file. If the title of the ebook is truncated in meta data then the calibre file name will be truncated. Fix the meta data in calibre then export it using save to disk or folder.

Or set calibre to use file name for meta data on import.

Guessing metadata from file names


bernie

I've already tried both : read metadata from the file name and from file contents. The original file name is not truncated neither does the metadata. The metadata in Calibre is ok. The limit of IIRC 250 characters hasn't been reached, far from it.
Moreover, the save to disk or folder doesn't work :

Traceback (most recent call last):
File "site-packages\calibre\gui2\save.py", line 172, in do_one_write
File "site-packages\calibre\gui2\save.py", line 205, in write_book
AttributeError: 'NoneType' object has no attribute 'split'