When trying to add a book to my library I get the following error overtime, regardless of how I try to add the book (drag and drop or "add Book"
I have disabled all plugins and cleaned the library (no errors, no duplicates). I've also tried a few different pub files with mixed results, some import fine, others generate this error. I cannot see any difference in the files and they are not DRMed.
Not sure if it matters, but Calibre is often using 90-105% of a CPU core (2012 iMac), then drops to 0.5%
macOS Sierra, Calibre 2.82
Code:
calibre, version 2.82.0
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/lbutlr/Desktop/Pilot X.epub to the book: /Users/lbutlr/Desktop/Pilot X.epub
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/lbutlr/Desktop/Pilot X.epub'