[PaganRuler]

Hi

I'm using macOS Sierra and have come up with this error... I'm not sure why or how to fix it but had a similar issue with another program that I forgot off the top of my head.

Failed to add the file /Users/paulgarner/Desktop/The Engine 2 Seven-Day Rescue Diet.epub to the book: /Users/paulgarner/Desktop/The Engine 2 Seven-Day Rescue Diet
With error:
Traceback (most recent call last):
File "site-packages/calibre/gui2/add.py", line 410, in add_formats
File "site-packages/calibre/db/cache.py", line 1385, in add_format
File "site-packages/calibre/startup.py", line 122, in local_open
IOError: [Errno 21] Is a directory: u'/Users/paulgarner/Desktop/The Engine 2 Seven-Day Rescue Diet.epub'