2015 Nook Glowlight Plus/Calibre connection interrupted, now Calibre hates the Nook

[ZodWallop]

So I had my 2015 Nook Glowlight Plus connected to Calibre and my flaky cable gave up the ghost and interrupted the Nook's connection to Calibre.

I've replaced the cable. But now when I try to connect the Nook, Calibre connects it, but takes FOREVER to read the list of books on the device (I literally left it connected for 24 hours). It never actually gets the list of books. The progress bar does slowly increase, but inevitably, I will get a message saying 'Error communicating with device'. And the Nook only has 4GB of memory, 2.5GB for books.

I'm not at home right now, but this would be the current version of Calibre on Windows 10.

The Nook otherwise works fine. I dragged and dropped the ePub I'd been wanting to add and it worked fine.

Calibre otherwise works fine. No issues connecting to my Nook ST, Clara HD or Clara 2e.

So the Nook is fine and Calibre is fine. They just don't like each other.

I have rebooted the Nook, Calibre and the PC. None of these changed anything.

[theducks]

Did you check the filesystem on the Nook (using Windows)?
In the root of the Nook, there are 2 Calibre files. The big one is the results of the previous scan.
It may be damaged and need to be deleted. (both should have the same timestamp )

[ZodWallop]

Originally Posted by theducks

Did you check the filesystem on the Nook (using Windows)?
In the root of the Nook, there are 2 Calibre files. The big one is the results of the previous scan.
It may be damaged and need to be deleted. (both should have the same timestamp )

Thanks. I'll check them when I get home. Would I be safe deleting both?

[DNSB]

Originally Posted by ZodWallop

Thanks. I'll check them when I get home. Would I be safe deleting both?

Yes. calibre will recreate them on the next connect.

[ZodWallop]

Right on. Thanks guys!

[ZodWallop]

Almost twelve hours in and it's at 43%. I don't understand why it is so slow. As mentioned, my Glowlight Plus only has a 4GB card with 2.5GB to scan.

Still, it hasn't yet crashed, so

[ZodWallop]

It crashed again. I do now have the driveinfo.calibre again, but not the metadata.calibre file.

[kovidgoyal]

Sounds like a hardware issue. Try different cable/usb port. Reset the Nook.

[ZodWallop]

Originally Posted by kovidgoyal

Sounds like a hardware issue. Try different cable/usb port. Reset the Nook.

Will do. Just seems weird as the Nook behaves as normal otherwise. Here is what the latest failure says:

calibre, version 6.14.0
ERROR: Error: Error communicating with device

C:\r\src\src\calibre\devices\mtp\windows\content_enumeration.cpp:710:Cannot write to file:[hr=0x802a0006 wCode=0] The requested value cannot be determined.

Traceback (most recent call last):
  File "calibre\gui2\device.py", line 104, in run
  File "calibre\gui2\device.py", line 556, in _books
  File "calibre\devices\mtp\driver.py", line 291, in books
  File "calibre\devices\mtp\driver.py", line 317, in write_metadata_cache
  File "calibre\devices\mtp\driver.py", line 157, in put_calibre_file
  File "calibre\devices\mtp\windows\driver.py", line 35, in check_thread
  File "calibre\devices\mtp\windows\driver.py", line 444, in put_file
wpd.WPDError: C:\r\src\src\calibre\devices\mtp\windows\content_enumeration.cpp:710:Cannot write to file:[hr=0x802a0006 wCode=0] The requested value cannot be determined.