[Crent]

I keep getting these 'error communicating with device ' errors

unable to open database file

Traceback (most recent call last):
File "site-packages\calibre\gui2\device.py", line 82, in run
File "site-packages\calibre\gui2\device.py", line 436, in _delete_books
File "site-packages\calibre\devices\kobo\driver.py", line 434, in delete_books
File "site-packages\calibre\devices\kobo\driver.py", line 349, in delete_via_sql
OperationalError: unable to open database file

thats trying to delete a book

calibre, version 0.8.41
ERROR: Error: Error communicating with device

(2, 'GetDiskFreeSpace', 'The system cannot find the file specified.')

Traceback (most recent call last):
File "site-packages\calibre\gui2\device.py", line 82, in run
File "site-packages\calibre\gui2\device.py", line 412, in _upload_books
File "site-packages\calibre\devices\usbms\driver.py", line 253, in upload_books
File "site-packages\calibre\devices\usbms\device.py", line 1010, in _sanity_check
File "site-packages\calibre\devices\usbms\device.py", line 175, in free_space
File "site-packages\calibre\devices\usbms\device.py", line 133, in _windows_space
error: (2, 'GetDiskFreeSpace', 'The system cannot find the file specified.')


thats trying to add a book

lots of room left on a 2gig sd card and the kobo touch itself.

if i reset to factory defaults it works for a little while and then this problem pops up

any ideas?