Calibre won't start

[davidsmartin]

After I upgraded to calibre 6.6.1 it won't start. Nothing happens. I downloaded again and chose repair but that did not help. When I ran calibre debug I got the following but none of this means anything to me. Should I uninstall and revert to 6.6.0? Or is there a better solution?

Thanks,

David



C:\Users\David>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
import site = 1
sys._base_executable = 'C:\\Program Files\\Calibre2\\calibre-debug.exe'
sys.base_prefix = ''
sys.base_exec_prefix = ''
sys.platlibdir = 'lib'
sys.executable = 'C:\\Program Files\\Calibre2\\calibre-debug.exe'
sys.prefix = ''
sys.exec_prefix = ''
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 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "bypy-importer.py", line 275, in exec_module
File "bypy-importer.py", line 63, in get_module_code
ValueError: bad marshal data (unknown type code)

Extension modules: bypy_frozen_importer (total: 1)

[kovidgoyal]

It indicates a corrupted install.

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.

[ownedbycats]

Originally Posted by kovidgoyal

It indicates a corrupted install.

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.

Addendum: Don't use any sort of 'clean uninstall' utility for this. That will go after your settings (and potentially your books). I nearly got caught by this myself.

[JSWolf]

You can also do a repair install. But before you do that, I suggest you download the installer again.

[davidsmartin]

Thanks. Running the repair reinstall did not help. Then I uninstalled and installed the previous version. Now it runs fine. I will update to 6.6.1 when I am confident that if it fails again I will have the time to uninstall and backtrack.

Dave

[JSWolf]

Originally Posted by davidsmartin

Thanks. Running the repair reinstall did not help. Then I uninstalled and installed the previous version. Now it runs fine. I will update to 6.6.1 when I am confident that if it fails again I will have the time to uninstall and backtrack.

Dave

Instead of going to 6.6.1 and if it doesn't work, going back, you'd be best to try to find out why 6.6.1 isn't working (that is if it doesn't work).

[Janneke]

Hi, I have the same issue with version 7.21.0. It starts in Save Mode but not in regular mode.
I've tried:
- Repairing
- Reinstalling (and opening for the first time with anti virus disabled).
- Disabling all startup programs
- Creating a new Windows user profile.
Nothing worked.
Does anyone have any more tips?

[kovidgoyal]

Someone recently doscovered one program that causes this issue:
https://bugs.launchpad.net/calibre/+bug/2088390 check if you have that installed and uninstall it.

[JSWolf]

Originally Posted by Janneke

Hi, I have the same issue with version 7.21.0. It starts in Save Mode but not in regular mode.
I've tried:
- Repairing
- Reinstalling (and opening for the first time with anti virus disabled).
- Disabling all startup programs
- Creating a new Windows user profile.
Nothing worked.
Does anyone have any more tips?

Update your video card driver if possible.
If you are on a laptop with dual video, have calibre start using the other video chipset.

If those two suggestions do not work, set the following environment variable in Windows.

QTWEBENGINE_CHROMIUM_FLAGS="--disable-gpu"

That will disable the video card for calibre and hopefully allow it to work.

One other thing I just thought of...Did you disable your anti-virus program?