Colorsoft MTP upload error

[d-belteshazzar]

I used KFX/AWZ3 formats to sideload my ebook to kindle colorsoft, but not success

[xxyzz]

What's the error message and traceback?

[d-belteshazzar]

AWZ3:
Failed to create the folder: system in ('Internal Storage',) with error: C:\r\src\src\calibre\devices\mtp\windows\content_enumeration.cpp:757:Failed to create folder:[hr=0x80004005 wCode=0 name=unknown] 無法指出的錯誤

Traceback (most recent call last):
File "calibre\devices\mtp\windows\driver.py", line 460, in create_folder
wpd.WPDError: C:\r\src\src\calibre\devices\mtp\windows\content_enumeration.cpp:757:Failed to create folder:[hr=0x80004005 wCode=0 name=unknown] 無法指出的錯誤

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "calibre\gui2\device.py", line 110, in run
File "calibre_plugins.worddumb.send_file", line 200, in mtp_upload_job
File "calibre\devices\mtp\driver.py", line 505, in ensure_parent
File "calibre\devices\mtp\windows\driver.py", line 37, in check_thread
File "calibre\devices\mtp\windows\driver.py", line 462, in create_folder
OSError: Failed to create the folder: system in ('Internal Storage',) with error: C:\r\src\src\calibre\devices\mtp\windows\content_enumeration.cpp:757:Failed to create folder:[hr=0x80004005 wCode=0 name=unknown] 無法指出的錯誤

[xxyzz]

The "system" folder can't be created, I don't know whether it's bug in calibre code or Kindle firmware's problem.

[d-belteshazzar]

So, what I can do is to wait new calibre or Kindle firmware upgrade, right?

[xxyzz]

Newer Kindles with MTP mode seem disable access of the "system" folder and maybe you'll need some extra settings in calibre to be able to sideload books. I don't know the details, you can ask in the calibre forum: https://www.mobileread.com/forums/forumdisplay.php?f=234