Calibre can't read metadata from epub

[matonkiki]

Hello and excuse my english

When I add a new epub to Calibre, I have this error code:

----------------------------------------------------------------------
Fallo al leer metadatos del archivo o archivos:
C:\Torrents\Perez Galdos, Benito - Gloria [23592] (r1.0).epub
Con error:
Traceback (most recent call last):
File "site-packages\calibre\gui2\add.py", line 263, in monitor_pool
File "site-packages\calibre\gui2\add.py", line 303, in process_result
File "site-packages\calibre\ebooks\metadata\tag_mapper.py", line 104, in map_tags
File "site-packages\calibre\ebooks\metadata\tag_mapper.py", line 24, in matcher
File "site-packages\regex\__init__.py", line 331, in compile
File "site-packages\regex\__init__.py", line 500, in _compile
error: nothing to repeat at position 0
==================================

This problem occurs whit all the libraries and too if I create a new metadata.db or I copy the metadata.db from my other computher (my other computer works well)

I have uninstaled, cleaned the registry and reinstalled several times (CCleaner and Iobit).

I have restored to default the add books options.

I only can add books if I untick the option "read metadata from the file" in the add options and I import books without metadata (I do add manually the metadata ! )

Thanks for your help

A.

[kovidgoyal]

You have a broken tag mapping rule. Preferences->Adding books->Create rules to filter/transform tags

[matonkiki]

Thank you very much!

It's running

Alicia