Errno13 on Adding files to Calibre Library

[DogFather43]

calibre, version 3.28.0
WARNING: Errors while adding: There were problems adding some files, click "Show details" for more information

I get the following example message (multiple files) when I add files to Calibre Library. Where do I go from here? The file reads perfectly in Adobe PDF.
----------------------------------------------------------------------
Failed to add the file C:\Users\Dave\Documents\Calibre Import\0415283299.Routledge.SPINOZA.Aug.2008.pdf to the book: Spinoza
With error:
Traceback (most recent call last):
File "site-packages\calibre\gui2\add.py", line 444, in add_formats
File "site-packages\calibre\db\cache.py", line 1412, in add_format
File "site-packages\calibre\db\cache.py", line 1377, in _do_add_format
File "site-packages\calibre\db\backend.py", line 1517, in add_format
File "site-packages\calibre\startup.py", line 116, in local_open
IOError: [Errno 13] Permission denied: u'C:\\Users\\Dave\\Documents\\Calibre Library\\Michael Della Rocca\\Spinoza (2759)\\Spinoza - Michael Della Rocca.pdf'

[Apache]

You would do better to ask this is the Calibre Forum below this one.
Apache

[haertig]

"Errno 13" = "Permission Denied". That error code is burned into my brain from being a Unix/Linux admin/programmer/geek for decades and decades.

Check your file and directory ownerships (if you're running this on a Linux box). I'm sure Windows must have some kind of permissions set up now as well, but it's been so long ago that I dumped Windows that I've forgotten. The last Windows that I installed for my own use was Windows 2000 (did that even have any permissions capabilities?)

[DNSB]

Originally Posted by haertig

"Errno 13" = "Permission Denied". That error code is burned into my brain from being a Unix/Linux admin/programmer/geek for decades and decades.

Check your file and directory ownerships (if you're running this on a Linux box). I'm sure Windows must have some kind of permissions set up now as well, but it's been so long ago that I dumped Windows that I've forgotten. The last Windows that I installed for my own use was Windows 2000 (did that even have any permissions capabilities?)

Win2K had permissions AKA Access control lists.

I would also suggest the OP check his antivirus/antimalware software as I've seen too many cases recently where that has been the cause for access errors in locations which should be accessible.