"Could not change the on-disk location of this book"

[Sunspoticus]

... somewhat frustrated and disappointed that Calibre is behaving this way. Maybe this is simple.

My Enviro:

Calibre 1.48 x64 running on Windows 7 x64
- Books are located on a network share provided by a Buffalo LinkStation 410
- To avoid the known issue with SQLITE and SMB/CIFS, I used the environment variable CALIBRE_OVERRIDE_DATABASE_PATH to keep my metadata.db on a local drive.

Accessing books already in the db, no problem.
Add a book and change the author and I get:

calibre, version 1.48.0
ERROR: Permission denied: Could not change the on disk location of this book. Is it open in another program?

Traceback (most recent call last):
File "site-packages\calibre\gui2\metadata\single.py", line 479, in apply_changes
File "site-packages\calibre\gui2\metadata\basic_widgets.py", line 291, in commit
File "site-packages\calibre\db\legacy.py", line 801, in func
File "site-packages\calibre\db\cache.py", line 57, in call_func_with_lock
File "site-packages\calibre\db\cache.py", line 1031, in set_field
File "site-packages\calibre\db\cache.py", line 1045, in update_path
File "site-packages\calibre\db\backend.py", line 1476, in update_path
File "site-packages\calibre\db\backend.py", line 1278, in copy_cover_to
File "site-packages\calibre\utils\filenames.py", line 397, in copy_path_to
File "site-packages\calibre\startup.py", line 155, in local_open
OSError: [Errno 13] Permission denied

1. There are no blockers permission-wise, as I can read/write to the same network location as Calibre is attempting to use w/o issue.
2. Whitelisted Calibre and exempted both local .db directory & network share from av scanner.

Whats odd, is this worked for years on a WD GoFlex, database 'n all.

[theducks]

Not odd at all.
Calibre does not support Net attached storage (see the FAQ).

You had one of the cases that worked,

now you don't (or have not found the magic settings. You may be lucky and have someone step up with those settings.)

NAS is great for backups, but your Library is at risk with other than local drives. YMMV

[nqk]

You can try creating a symbolic link to the folder on the NAS. Calibre may open and handle that symbolic-link folder without problem (maybe a little bit slower?).

[cvlowe]

Just curious, did you have the book open in a viewer such as Acrobat Reader at the same time you tried to edit the metadata?

[Glorfindel]

Ha! Found you