The error still occurs. There's really no errors in the debug log besides:
Code:
Traceback (most recent call last):
File "site-packages/calibre/gui2/device.py", line 83, in run
File "site-packages/calibre/gui2/device.py", line 478, in _upload_books
File "site-packages/calibre/devices/smart_device_app/driver.py", line 43, in _synchronizer
File "site-packages/calibre/devices/smart_device_app/driver.py", line 749, in upload_books
File "site-packages/calibre/devices/smart_device_app/driver.py", line 409, in _put_file
File "site-packages/calibre/devices/smart_device_app/driver.py", line 376, in _call_client
ControlError: <unprintable ControlError object>
Is there anything else that I can provide you so that we can further debug this??