Polish of more than 3 books crashes Calibre.

[Magnuss]

Hi,

After updating to Calibre 9.12, some of my metadata was missing. After searching for causes and fixes, I read that polishing books is recommended, so Calibre stores everything inside the library. Sadly, if I try to do that with more than three books, Calibre crashes without an error message. I can polish one book at a time, but that isn't really feasible for my growing library. Is there a fix or configuration I'm missing for mass polishing?

steps done so far to fix it:

• I did run a maintenance check on my Library without errors.
• change parallel processes to a higher number.
• Run Calibre Debug Mode: Debug Mode doesn't even log the Polish Jobs or Crash.

[PeterT]

A minor suggestion; rather than pasting a screenshot of errors, please copy and paste the TEXT. Even better, launch calibre in debug mode (look in preferences), replicate the issue, shut calibre down and paste the resulting calibre debug log.

[Jaws]

As an additional data point indicating that Magnuss's problem may relate to his specific setup, after installing 9.12 I did a batch polish of six books at once that flew through with no errors.

That said, my experience in the past has been that the "upgrade internals" option, which is checked on the first of the screenshots, is most likely to be related to any later errors. That's far less because of Calibre than some of the idiosyncratic coding and workarounds often found in epubs (example: books that use

<div>

instead of

<p>

for every paragraph) that makes it difficult to properly update from epub2 to epub3.

Thus, the first step I'd take to debug this is to uncheck "upgrade internals," close everything, restart everything, and try again.

[Magnuss]

Originally Posted by Jaws;4601538
That said, my experience in the past has been that the "upgrade internals" option, which is checked on the first of the screenshots, is most likely to be related to any later errors. That's far less because of Calibre than some of the idiosyncratic coding and workarounds often found in epubs (example: books that use [CODE

<div>[/CODE] instead of

<p>

for every paragraph) that makes it difficult to properly update from epub2 to epub3.

Thus, the first step I'd take to debug this is to uncheck "upgrade internals," close everything, restart everything, and try again.

I checked it without upgrading the internals, and it crashed anyway. I also tried using three random books each time and it didn't matter which books I chose; they crashed anyway. If I did them one at a time, they didn't crash. Thank you for the suggestion.

[Magnuss]

Originally Posted by PeterT

A minor suggestion; rather than pasting a screenshot of errors, please copy and paste the TEXT.

I didn't paste a screenshot of the errors; as you can see, there aren't any. There is nothing captured by Calibre it simply stops. If there were error logs, I would of course paste them as plain text, but the only thing logged was the normal Calibre initialisation sequence.

Originally Posted by PeterT

Even better, launch calibre in debug mode (look in preferences), replicate the issue, shut calibre down and paste the resulting calibre debug log.

I used Calibre in debug mode — how else do you think I got the logs? The whole program is crashing, including the debug logger. So, nothing is logged after Calibre's initialisation sequence when I start the Polish job.

[BetterRed]

@Magnuss : I may have missed it, but which operating system are you using, and which version?

BR

[Magnuss]

Originally Posted by BetterRed

@Magnuss : I may have missed it, but which operating system are you using, and which version?

BR

Windows-11-10.0.26200-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.26200')

[Magnuss]

On request here the log that doesn't show anything because it breaks before the crash as plain text.

ApplicationPaletteChange event ignored
Using calibre Qt style: True
calibre Debug log
calibre 9.12 embedded-python: True
Windows-11-10.0.26200-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.26200')
Python 3.14.6
Windows: ('11', '10.0.26200', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Successfully initialized third party plugins: DeACSM (0, 0, 16) && DeDRM (10, 0, 9) && Extract ISBN (1, 6, 6) && Goodreads (1, 8, 5) && Goodreads Sync (1, 17, 4)
calibre 9.12 embedded-python: True
Windows-11-10.0.26200-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.26200')
Python 3.14.6
Windows: ('11', '10.0.26200', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Successfully initialized third party plugins: DeACSM (0, 0, 16) && DeDRM (10, 0, 9) && Extract ISBN (1, 6, 6) && Goodreads (1, 8, 5) && Goodreads Sync (1, 17, 4)
QPA platform: windows
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 92.53889943074003 x 92.67567567567568
[0.00] Starting up...
[0.00] Showing splash screen...
[1.16] splash screen shown
[1.16] Initializing db...
[1.19] db initialized
[1.19] Constructing main UI...
[1.63] GUI main window shown
[1.67] main UI initialized...
[1.67] Hiding splash screen
[1.67] splash screen hidden
[1.67] Started up in 1.67 seconds with 353 books

[BetterRed]

Try starting Windows in Safe Mode, run calibre, and nothing else, then try Polishing a few books.

See ==>> calibre freezes/crashes occasionally?

BR

[Comfy.n]

I can't repro on Windows 10.