[DNSB]

It's me again, Margaret.

I updated to the beta 8.99.8 release and the latest source download. calibre does not start with an error about not being able to import UTF-16 slice. Running the beta only does work.

Spoiler:

Microsoft Windows [Version 10.0.26200.7623]
(c) Microsoft Corporation. All rights reserved.

C:\Users\dbowe>calibre-debug -g
calibre 8.99.8*  embedded-python: True
Windows-11-10.0.26200-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.26200')
Python 3.14.2
Windows: ('11', '10.0.26200', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
calibre_plugins.baen.__init__:47: SyntaxWarning: "\d" is an invalid escape sequence. Such sequences will not work in the future. Did you mean "\\d"? A raw string is also an option.
calibre_plugins.baen.__init__:59: SyntaxWarning: "\." is an invalid escape sequence. Such sequences will not work in the future. Did you mean "\\."? A raw string is also an option.
calibre_plugins.baen.__init__:198: SyntaxWarning: "\s" is an invalid escape sequence. Such sequences will not work in the future. Did you mean "\\s"? A raw string is also an option.
calibre_plugins.baen.__init__:199: SyntaxWarning: "\s" is an invalid escape sequence. Such sequences will not work in the future. Did you mean "\\s"? A raw string is also an option.
Successfully initialized third party plugins: ACSM Input (0, 1, 0) && LCPL Input (0, 0, 5) && Gather KFX-ZIP (from KFX Input) (2, 28, 0) && DeDRM (10, 0, 15) && AZW6 Image Merge (1, 1, 1) && Package KFX (from KFX Input) (2, 28, 0) && ACSM Input Plugin GUI Extension (0, 1, 0) && Apple Books covers (1, 1, 0) && Backup Configuration Folder (1, 1, 2) && Baen (1, 1, 0) && Barnes & Noble (1, 5, 7) && Count Pages (1, 14, 4) && Diaps Editing Toolbag (0, 5, 0) && EpubCheck (0, 2, 6) && EpubMerge (3, 2, 0) && EpubSplit (3, 12, 0) && FanFicFare (4, 53, 0) && Find Duplicates (1, 10, 9) && Generate Cover (2, 3, 6) && Goodreads (1, 8, 3) && Job Spy (1, 0, 239) && KFX metadata reader (from KFX Input) (2, 28, 0) && From KFX (2, 28, 0) && KFX Input (2, 28, 0) && Set KFX metadata (from KFX Output) (2, 18, 0) && KFX Output (2, 18, 0) && Kindle hi-res covers (0, 5, 1) && KindleUnpack - The Plugin (0, 83, 8) && Kobo Metadata (1, 12, 0) && Kobo Utilities (2, 25, 0) && Modify ePub (1, 8, 8) && Obok DeDRM (10, 0, 9) && Open With (1, 8, 4) && OverDrive Libby (0, 2, 101) && Quality Check (1, 14, 6) && Resize Cover (1, 2, 1) && ScrambleEbook (0, 6, 0) && SmartEject (2, 6, 0) && Smashwords Metadata (1, 0, 2)
QPA platform: windows
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 81.55183946488295 x 81.64285714285714
ApplicationPaletteChange event ignored
Using calibre Qt style: True
ApplicationPaletteChange event received
Traceback (most recent call last):
  File "runpy.py", line 198, in _run_module_as_main
  File "runpy.py", line 88, in _run_code
  File "site.py", line 83, in <module>
  File "site.py", line 78, in main
  File "site.py", line 50, in run_entry_point
  File "d:\calibre\calibre-master\src\calibre\debug.py", line 236, in main
  File "d:\calibre\calibre-master\src\calibre\gui_launch.py", line 74, in calibre
  File "d:\calibre\calibre-master\src\calibre\gui2\main.py", line 550, in main
  File "d:\calibre\calibre-master\src\calibre\gui2\main.py", line 566, in run_main
  File "d:\calibre\calibre-master\src\calibre\gui2\main.py", line 397, in run_gui
  File "d:\calibre\calibre-master\src\calibre\gui2\main.py", line 407, in run_gui_
  File "d:\calibre\calibre-master\src\calibre\gui2\ui.py", line 39, in <module>
  File "d:\calibre\calibre-master\src\calibre\gui2\init.py", line 38, in <module>
  File "d:\calibre\calibre-master\src\calibre\gui2\library\bookshelf_view.py", line 92, in <module>
ImportError: cannot import name 'utf16_slice' from 'calibre_extensions.progress_indicator' (C:\Program Files\Calibre2\app\bin\progress_indicator.pyd)