I have tried to add a new format to a book in the database using the button in the Metadata GUI and it didn't work.
The error message was:
Quote:
Traceback (most recent call last):
File "site-packages\calibre\gui2\dialogs\metadata_single.py", line 135, in add_format
File "site-packages\calibre\gui2\dialogs\metadata_single.py", line 162, in _add_formats
TypeError: error_dialog() takes at least 3 non-keyword arguments (2 given)
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Is it a bug or (more probably) I'm doing anything wrong?
Thanks in advance