On the first time--and only the first time--that I ran calibre 4.99.9 after installing it, I got an error message.
By the fact that it's something in winreg, I speculate that it's something that may only happen on the first run and therefore be worth reporting for the rarity value if nothing else.
debug log:
Code:
calibre 4.99.9 [64bit] embedded-python: True is64bit: True
Windows-10-10.0.18362-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.18362')
Python 3.8.3
Windows: ('10', '10.0.18362', 'SP0', 'Multiprocessor Free')
Interface language: None
Successfully initialized third party plugins: ColumnSum (2, 1, 0) && Count Pages (1, 10, 0) && EpubMerge (2, 10, 0) && EpubSplit (2, 9, 0) && FanFicFare (3, 21, 12) && Favourites Menu (1, 0, 5) && Generate Cover (1, 5, 25) && Manage Series (1, 2, 9) && Modify ePub (1, 4, 1) && Quality Check (1, 10, 1) && Reading List (1, 6, 11) && SmartEject (2, 3, 0) && SplitMergeNew (0, 2, 0) && View Manager (1, 5, 6)
Registering with default programs...
Turning on automatic hidpi scaling
devicePixelRatio: 2.0
logicalDpi: 96.0 x 96.0
physicalDpi: 141.35652173913041 x 141.4020618556701
Using calibre Qt style: True
Traceback (most recent call last):
File "site-packages\calibre\utils\winreg\default_programs.py", line 167, in run
File "site-packages\calibre\utils\winreg\default_programs.py", line 184, in do_register
File "site-packages\calibre\utils\winreg\default_programs.py", line 112, in register
File "site-packages\calibre\utils\winreg\default_programs.py", line 60, in extensions
File "<frozen zipimport>", line 259, in load_module
File "site-packages\calibre\ebooks\oeb\polish\main.py", line 13, in <module>
File "<frozen zipimport>", line 259, in load_module
File "site-packages\calibre\ebooks\oeb\polish\container.py", line 39, in <module>
File "<frozen zipimport>", line 259, in load_module
File "site-packages\calibre\ebooks\mobi\tweak.py", line 21, in <module>
File "<frozen zipimport>", line 259, in load_module
File "site-packages\calibre\utils\ipc\simple_worker.py", line 10, in <module>
ImportError: cannot import name 'Client' from 'multiprocessing.connection' (c:\Program Files\Calibre2\\app\pylib.zip\multiprocessing\connection.pyc)
[0.00] Starting up...
[0.00] Initializing db...
Upgrading database to version 24...
[0.38] db initialized
[0.39] Constructing main UI...
EpubMerge: DEBUG: 2020-08-05 19:59:10,762: calibre_plugins.epubmerge.epubmerge_plugin(157): macmenuhack file_path:C:\Users\User\AppData\Roaming\calibre\plugins\fanficfare_macmenuhack.txt
FFF: DEBUG: 2020-08-05 19:59:10,772: calibre_plugins.fanficfare_plugin.fff_plugin(210): Plugin FanFicFare macmenuhack file_path:C:\Users\User\AppData\Roaming\calibre\plugins\fanficfare_macmenuhack.txt
[2.58] main UI initialized...
[2.58] Started up in 2.58 seconds with 5621 books