error reading books from nook

[infinity]

when reading books from nook, after a while i get the error:
calibre, version 0.8.27
ERROR: Error: Error communicating with device

can't compare offset-naive and offset-aware datetimes

Traceback (most recent call last):
  File "site-packages\calibre\gui2\device.py", line 81, in run
  File "site-packages\calibre\gui2\device.py", line 333, in _books
  File "site-packages\calibre\devices\usbms\driver.py", line 240, in books
  File "site-packages\calibre\devices\usbms\driver.py", line 384, in sync_booklists
  File "site-packages\calibre\devices\usbms\driver.py", line 382, in write_prefix
  File "site-packages\calibre\ebooks\metadata\book\json_codec.py", line 111, in encode_to_file
  File "site-packages\calibre\ebooks\metadata\book\json_codec.py", line 117, in encode_booklist_metadata
  File "site-packages\calibre\ebooks\metadata\book\json_codec.py", line 123, in encode_book_metadata
  File "site-packages\calibre\ebooks\metadata\book\json_codec.py", line 145, in encode_metadata_attr
  File "site-packages\calibre\ebooks\metadata\book\json_codec.py", line 25, in datetime_to_string
TypeError: can't compare offset-naive and offset-aware datetimes

[Kovid Goyal (kovid)]

Changing the component for this bug.

 assignee cbhaley
 status triaged

[Charles Haley (cbhaley)]

I cannot repeat this problem, so I don't know what it causing it. However, I submitted code that protects the comparison, which should prevent it from happening again, in json_codec at least

[Kovid Goyal (kovid)]

Fixed in branch lp:calibre. The fix will be in the next release. calibre is usually released every Friday.

 status fixreleased