Calibre 7.9.0 not running

[Mob201503]

Hi there,

Installed Calibre 7.9.0 today and now it won't launch. Never happened me before.

Tried some solution suggestions from similar 'Calibre not running' threads, mostly for Calibre version 7+, but nothing works.

- Renaming gui.json to gui.json.bak
- Renaming config folder to calibre.bak
- Repair installation

Cautious about uninstalling, because although I know it won't affect my books and their settings, I'm worried about losing all the in-built settings, particularly plugins, Calibre content server & wireless/email settings, various behaviour settings, tweaks and custom menu settings.

Don't feel comfortable downgrading.

Ran "calibre-debug -g" and got this:

------------------------

C:\Users\userfolder>calibre-debug -g
Python path configuration:
PYTHONHOME = (not set)
PYTHONPATH = (not set)
program name = 'C:\Program Files\Calibre2\calibre-debug.exe'
isolated = 1
environment = 0
user site = 0
safe_path = 1
import site = 1
is in build tree = 0
stdlib dir = ''
sys._base_executable = 'C:\\Program Files\\Calibre2\\calibre-debug.exe'
sys.base_prefix = 'C:\\Users\\userfolder'
sys.base_exec_prefix = 'C:\\Users\\userfolder'
sys.platlibdir = 'DLLs'
sys.executable = 'C:\\Program Files\\Calibre2\\calibre-debug.exe'
sys.prefix = 'C:\\Users\\userfolder'
sys.exec_prefix = 'C:\\Users\\userfolder'
sys.path = [
]
Fatal Python error: init_fs_encoding: failed to get the Python codec of the filesystem encoding
Python runtime state: core initialized
Traceback (most recent call last):
File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
File "bypy-importer.py", line 275, in exec_modle
File "bypy-importer.py", line 63, in get_module_code
ValueError: bad marshal data (unknown type code)

Extension modules: bypy_frozen_importer (total: 1)

------------------------

Can anyone shed any light on what's happening help and suggest a remedy?

Calibre's the best of course. It's only when it's gone you realise how much you miss it.

Thanks.

[kovidgoyal]

Uninstall, delete C:\\Program Files\\Calibre2
(or wherever you chose to install calibre). Then re-install. And
dont worry, uninstalling will not affect your books/settings/plugins.

[Mob201503]

Originally Posted by kovidgoyal

Uninstall, delete C:\\Program Files\\Calibre2
(or wherever you chose to install calibre). Then re-install. And
dont worry, uninstalling will not affect your books/settings/plugins.

Worked like a charm Kovid. My calibre world is back up and running

You're a superstar. Thank you, not least too for such a speedy reply.