FYI,
I installed 2.99.3 portable on Win10 and did basic testing with the plugins I maintain and most commonly use. I encountered no issues with the new Calibre.
Version details:
Spoiler:
Code:
calibre Debug log
calibre 2.99.3 Portable embedded-python: True is64bit: False
Windows-10-10.0.14393-SP0 Windows ('32bit', 'WindowsPE')
32bit process running on 64bit windows
('Windows', '10', '10.0.14393')
Python 2.7.12+
Windows: ('10', '10.0.14393', 'SP0', u'Multiprocessor Free')
Successfully initialized third party plugins: Manage Series (1, 2, 8) && SmartEject (2, 0, 6) && View Manager (1, 3, 2) && Open With (1, 5, 10) && Generate Cover (1, 5, 21) && EpubMerge (2, 1, 0) && Favourites Menu (1, 0, 4) && Unplugged (1, 0, 0) && FanFicFare (2, 10, 0) && EpubSplit (2, 2, 0) && Count Pages (1, 7, 0) && Reading List (1, 6, 6)
Turning on automatic hidpi scaling
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 141.76744186 x 141.402061856
Starting up...