[mbovenka]

Since upgrading to 1.6.0, Extract ISBN is throwing errors:

calibre, version 1.6.0
ERROR: Unhandled exception: <b>ValueError</b>:tuple.index(x): x not in tuple

calibre 1.6 Portable isfrozen: True is64bit: False
Windows-XP-5.1.2600-SP3 Windows ('32bit', 'WindowsPE')
('Windows', 'XP', '5.1.2600')
Python 2.7.5
Windows: ('XP', '5.1.2600', 'SP3', 'Multiprocessor Free')
Traceback (most recent call last):
File "site-packages\calibre\gui2\actions\edit_metadata.py", line 642, in do_one_apply
File "site-packages\calibre\gui2\actions\edit_metadata.py", line 722, in finalize_apply
File "calibre_plugins.extract_isbn.action", line 166, in _mark_and_display_results
File "site-packages\calibre\db\view.py", line 383, in set_marked_ids
File "site-packages\calibre\gui2\__init__.py", line 421, in __call__
File "site-packages\calibre\gui2\library\views.py", line 696, in marked_changed
File "site-packages\calibre\db\view.py", line 193, in id_to_index
ValueError: tuple.index(x): x not in tuple

Quality Check does the same now and again. Did something change in 1.6 to break them?

Edit: Never mind, found that it's a bug in Calibre that 'will be fixed in next release' (as always :-))