Hello,
As I had to re-install my computer I get the following error (before everything when press Config or Convert). And on another computer too, testing it (Version of Calibre 6.0 W11 W10 for second, and last Prince. Thanks to answer

Julie34
calibre 6.0 embedded-python: True
Windows-10-10.0.22000 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.22000')
Python 3.10.1
Windows: ('10', '10.0.22000', '', 'Multiprocessor Free')
Interface language: fr
Successfully initialized third party plugins: EpubCheck (0, 2, 4) && EpubMerge (2, 13, 0) && Prince PDF (1, 5, 0)
Traceback (most recent call last):
File "calibre_plugins.prince_pdf.main", line 237, in config
File "calibre\customize\__init__.py", line 166, in do_user_config
File "calibre_plugins.prince_pdf.__init__", line 25, in config_widget
File "calibre_plugins.prince_pdf.config", line 206, in __init__
AttributeError: type object 'TextEditWithTooltip' has no attribute 'NoWrap'