[blivett]

Hoping someone with knowledge can steer me in the right direction. My Calibre has stopped displaying the contents of my kobo eReader and instead when I try to Send to device it reports:

Attribute error:'list' object has no attribute 'add-book'

Details:
calibre, version 0.7.52
ERROR: Unhandled exception: <b>AttributeError</b>:'list' object has no attribute 'add_book'

Traceback (most recent call last):
File "site-packages\calibre\gui2\__init__.py", line 250, in dispatch
File "site-packages\calibre\gui2\device.py", line 1241, in books_uploaded
File "site-packages\calibre\gui2\device.py", line 393, in add_books_to_metadata
File "site-packages\calibre\devices\kobo\driver.py", line 381, in add_books_to_metadata
AttributeError: 'list' object has no attribute 'add_book'

END

Appreciate your help. Thanks, BGL