help

everytime i try to connect me kindle to calibre this is what happens. It tells me they stopped communicating

Please help.



Cannot write to file: hr=2147500037 facility=0 error_code=16389 description: Unspecified error


Traceback (most recent call last):
File "site-packages\calibre\gui2\device.py", line 87, in run
File "site-packages\calibre\gui2\device.py", line 503, in _books
File "site-packages\calibre\devices\mtp\driver.py", line 216, in books
File "site-packages\calibre\devices\mtp\driver.py", line 188, in get_driveinfo
File "site-packages\calibre\devices\mtp\driver.py", line 178, in _update_drive_info
File "site-packages\calibre\devices\mtp\driver.py", line 149, in put_calibre_file
File "site-packages\calibre\devices\mtp\windows\driver.py", line 35, in check_thread
File "site-packages\calibre\devices\mtp\windows\driver.py", line 439, in put_file
WPDError: Cannot write to file: hr=2147500037 facility=0 error_code=16389 description: Unspecified error