[kimberlynorton]

I cannot get Calibre to add books. Trying to add the .epub book titled The Swift Programming Language by Apple. I get the error message:

calibre, version 3.16.0
WARNING: Errors while adding: There were problems adding some files, click "Show details" for more information

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Failed to add the file /Users/kimberlynorton/Library/Containers/com.apple.BKAgentService/Data/Documents/iBooks/Books/22651C84B5200231F2568B76D294EC4E.epub to the book: /Users/kimberlynorton/Library/Containers/com.apple.BKAgentService/Data/Documents/iBooks/Books/22651C84B5200231F2568B76D294EC4E
With error:
Traceback (most recent call last):
File "site-packages/calibre/gui2/add.py", line 430, in add_formats
File "site-packages/calibre/db/cache.py", line 1410, in add_format
File "site-packages/calibre/startup.py", line 122, in local_open
IOError: [Errno 21] Is a directory: u'/Users/kimberlynorton/Library/Containers/com.apple.BKAgentService/Data/Documents/iBooks/Books/22651C84B5200231F2568B76D294EC4E.epub'

I am running macOS High Sierra Version 10.13.3. Note: I can launch Calibre, I just cannot add an ePub book to it.

Sorry, but I am new to the forum and lost on what I am doing, so posting all over the place.