[davidfor]

Originally Posted by oren64

Can you add a link please.

See https://www.mobileread.com/forums/sh...d.php?t=286270 for the discussion. The link is in the first post.

It's look like the limit is 954 books, after that I get an error even if I send one book.

Spoiler:

Error -3 while decompressing: invalid stored block lengths

Traceback (most recent call last):
  File "site-packages\calibre\gui2\device.py", line 88, in run
  File "site-packages\calibre\gui2\device.py", line 592, in _upload_books
  File "calibre_plugins.kobotouch_extended.device.driver", line 335, in upload_books
  File "site-packages\calibre\devices\kobo\driver.py", line 1960, in upload_books
  File "calibre_plugins.kobotouch_extended.device.driver", line 179, in _modify_epub
  File "site-packages\calibre\ebooks\oeb\polish\container.py", line 1130, in __init__
  File "site-packages\calibre\utils\localunzip.py", line 231, in extractall
  File "site-packages\calibre\utils\localunzip.py", line 213, in _extractall
  File "site-packages\calibre\utils\localunzip.py", line 165, in copy_compressed_file
error: Error -3 while decompressing: invalid stored block lengths

Edit: It may be a problem with one book, I try to load other books and it's works okay,
so maybe the problem is with KoboTouchExtended.

Yes, that looks more like a problem with a book.