Cannot Merge with v7.13

[Steve Valliere]

Ever since upgrading to v7.13, I get an error when trying to merge books. Here's the info from the message:

calibre, version 7.13.0
ERROR: Unhandled exception: <b>TypeError</b>:cannot unpack non-iterable bool object

calibre 7.13 embedded-python: True
Windows-10-10.0.19045-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19045')
Python 3.11.5
Windows: ('10', '10.0.19045', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre.exe
Successfully initialized third party plugins: Fantastic Fiction (1, 7, 0) && Fantastic Fiction Adults (1, 3, 1) && Find Duplicates (1, 10, 9) && Job Spy (1, 0, 239) && Kindle Collections (1, 7, 29) && Manage Series (1, 5, 2) && Quality Check (1, 13, 11) && View Manager (1, 10, 3)
Traceback (most recent call last):
  File "calibre\gui2\actions\edit_metadata.py", line 644, in merge_books
TypeError: cannot unpack non-iterable bool object

Was there something I needed to do as part of this upgrade? Is there anything I can do to fix this now that I have updated? Thanks!

[ownedbycats (ownedbycats)]

Get the preview release:

https://download.calibre-ebook.com/preview/

[Steve Valliere (nurbles62)]

Thanks! I can merge again, but unchecking the box to show the confirmation every time has no effect. So I need to confirm every merge. Annoying, but livable. Thanks again!