[BetterRed]

Originally Posted by theducks

If 'it still works', where did that log come from?

Read what the OP wrote:

BR

Originally Posted by thegameksk

Im using onedrive for my books.

Every now and then I get

calibre, version 6.14.1

ERROR: Unhandled error: Failed to read book data from calibre library. Click "Show details" for more information

Traceback (most recent call last):
File "calibre\db\backend.py", line 1542, in copy_cover_to
OSError: [Errno 22] Invalid argument: 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg'

Spoiler:

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\db\backend.py", line 1546, in copy_cover_to
OSError: [Errno 22] Invalid argument: 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\gui2\library\models.py", line 634, in current_changed
File "calibre\gui2\library\models.py", line 611, in get_book_display_info
File "calibre\gui2\library\models.py", line 806, in cover
File "calibre\db\legacy.py", line 455, in cover
File "calibre\db\cache.py", line 1004, in cover
File "calibre\db\cache.py", line 77, in call_func_with_lock
File "calibre\db\cache.py", line 1039, in copy_cover_to
File "calibre\db\backend.py", line 1549, in copy_cover_to
Exception: Failed to open 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg' with error: [Errno 22] Invalid argument: 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg'

When I try to save Metadata on certain books I get:
calibre, version 6.14.1
ERROR: Unhandled exception: <b>Exception</b>:Failed to open 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg' with error: [Errno 22] Invalid argument: 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg'

calibre 6.14.1 embedded-python: True
Windows-10-10.0.22621-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.22621')
Python 3.10.1
Windows: ('10', '10.0.22621', 'SP0', 'Multiprocessor Free')
Interface language: None
Traceback (most recent call last):
File "calibre\db\backend.py", line 1542, in copy_cover_to
OSError: [Errno 22] Invalid argument: 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\db\backend.py", line 1546, in copy_cover_to
OSError: [Errno 22] Invalid argument: 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "calibre\gui2\actions\edit_metadata.py", line 438, in edit_metadata
File "calibre\gui2\actions\edit_metadata.py", line 461, in edit_metadata_for
File "calibre\gui2\actions\edit_metadata.py", line 491, in do_edit_metadata
File "calibre\gui2\metadata\single.py", line 1250, in edit_metadata
File "calibre\gui2\metadata\single.py", line 665, in start
File "calibre\gui2\metadata\single.py", line 701, in do_one
File "calibre\gui2\metadata\single.py", line 383, in __call__
File "calibre\gui2\metadata\basic_widgets.py", line 1274, in initialize
File "calibre\db\legacy.py", line 455, in cover
File "calibre\db\cache.py", line 1004, in cover
File "calibre\db\cache.py", line 77, in call_func_with_lock
File "calibre\db\cache.py", line 1039, in copy_cover_to
File "calibre\db\backend.py", line 1549, in copy_cover_to
Exception: Failed to open 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg' with error: [Errno 22] Invalid argument: 'C:\\Users\\ksk9\\OneDrive\\Books\\Calibre Library\\Dean Palmer\\Tea With Hitler_ The Secret Histor (12124)\\cover.jpg'

Not sure the issue. This just started happening. I tried updating calibre and it hasnt made a difference