[maybedog]

I'm getting constant errors. This one was for selecting more than one book at a time. Then I got it every time I tried to select a book. How can I revert to an earlier version? This is so frustrating.

calibre, version 5.10.1
ERROR: Unhandled exception: <b>OSError</b>:[Errno 22] Invalid argument

calibre 5.10.1 Portable embedded-python: True is64bit: False
Windows-10-10.0.18362 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.18362')
Python 3.8.5
Windows: ('10', '10.0.18362', '', 'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: Barnes & Noble (1, 2, 16) && Count Pages (1, 11, 0) && DOC Input (1, 0, 1) && EpubMerge (2, 11, 0) && EpubSplit (3, 0, 0) && Find Duplicates (1, 8, 4) && Goodreads (1, 5, 1) && Quality Check (1, 11, 0) && Resize Cover (1, 1, 0)
Traceback (most recent call last):
File "calibre\gui2\library\models.py", line 571, in current_changed
File "calibre\gui2\library\models.py", line 556, in get_book_display_info
File "calibre\gui2\library\models.py", line 734, in cover
File "calibre\db\legacy.py", line 448, in cover
File "calibre\db\cache.py", line 723, in cover
File "calibre\db\cache.py", line 72, in call_func_with_lock
File "calibre\db\cache.py", line 763, in copy_cover_to
File "calibre\db\backend.py", line 1445, in copy_cover_to
File "shutil.py", line 202, in copyfileobj
OSError: [Errno 22] Invalid argument