[was698002]

I know NAS storage is discouraged but I have been doing it since Windows XP as the only person on my NAS and it has worked well. All of a sudden I can't see my library on Calibre with Win 11 although I was able to last week. Looks fine on File Explorer and can even see .caltrash (which seems to be empty including sub folders)

calibre, version 8.15.0
ERROR: Unhandled exception: <b>PermissionError</b>:[WinError 5] Access is denied: '\\\\PALIMPSEST\\Cloud_Nein\\Calibre Library2\\.caltrash'

calibre 8.15 embedded-python: True
Windows-10-10.0.26200-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.26200')
Python 3.11.14
Windows: ('10', '10.0.26200', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre.exe
Successfully initialized third party plugins: DeDRM (10, 0, 9) && Standard Ebooks (1, 0, 0)
Traceback (most recent call last):
File "calibre\startup.py", line 63, in slot
File "calibre\gui2\actions\choose_library.py", line 332, in <lambda>
File "calibre\gui2\actions\choose_library.py", line 773, in switch_requested
File "calibre\gui2\ui.py", line 974, in library_moved
File "calibre\db\legacy.py", line 191, in __init__
File "calibre\db\legacy.py", line 45, in create_backend
File "calibre\db\backend.py", line 548, in __init__
File "calibre\db\backend.py", line 2215, in ensure_trash_dir
PermissionError: [WinError 5] Access is denied: '\\\\PALIMPSEST\\Cloud_Nein\\Calibre Library2\\.caltrash'

Is this due to a Win 11 update? Is the problem with .caltrash?