I have a Kindle Fire HD and am running Windows 8.1
Cannot write to file: hr=2147944029 facility=7 error_code=1629 description: Data supplied is of wrong type.
Traceback (most recent call last):
File "site-packages\calibre\gui2\device.py", line 86, in run
File "site-packages\calibre\gui2\device.py", line 571, in _upload_books
File "site-packages\calibre\devices\mtp\driver.py", line 430, in upload_books
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=2147944029 facility=7 error_code=1629 description: Data supplied is of wrong type.
it was working earlier now I have no idea what happened