Upgraded to Calibre 4 and all my book covers are gone. - Page 2

BetterRed · 10-05-2019, 06:07 PM

Try this ==>> Use the System File Checker tool to repair missing or corrupted system files

BR

kovidgoyal · 10-05-2019, 08:14 PM

Yeah the list of image file extensiosn comes from the supported image formats in Qt. Which in turn comes from the list of qt image plugins. For some reason on your system the image plugins are not being picked up. Check if they have been quarantined by an antivirus. The plugin files are in app/plugins/imageformats inside the calibr installation folder. It should contain the files qgif.dll qicns.dll qico.dll qjpeg.dll qsvg.dll qtga.dll qtiff.dll qwbmp.dll qwebp.dll

FulciLives · 10-06-2019, 01:09 AM

Here's what I got...

(Please See Attached Image)

By the way, the only Anti-Virus that I am running is the one built into Windows 10 aka Windows Defender.

kovidgoyal · 10-06-2019, 01:48 AM

Then I'm at a loss, sorry, I sugget downgrading to 3.48 for the moment.

FulciLives · 10-06-2019, 02:22 AM

My apologies. I feel like I've been a thorn in your side here since it seems I'm the only one having the issue.

I guess I will go back to 3.48 for now.

Cheers and thank you very much for your time.

kovidgoyal · 10-06-2019, 02:26 AM

No worries, big updates to Qt like this one always have a few system where weird things happen. Hopefully once things settle down, a solution will be found.

BetterRed · 10-06-2019, 03:10 AM

Quote:

Originally Posted by FulciLives

My apologies. I feel like I've been a thorn in your side here since it seems I'm the only one having the issue.

I guess I will go back to 3.48 for now.

Cheers and thank you very much for your time.

Did you try an sfc /scannow - it's a long shot, but it wouldn't do any harm - that is if it's not too late.

BR

FulciLives · 10-06-2019, 03:34 AM

Quote:

Originally Posted by BetterRed

Did you try an sfc /scannow - it's a long shot, but it wouldn't do any harm - that is if it's not too late.

BR

I did it after my last reply.

It did find errors which, according to the LOG, it was able to repair A-OK.

However, that seemed to make no changes with my Calibre issues.

I've gone back to 3.48 and everything appears to be fine just as it was before. My covers are showing up as they should.

Go figure *shrugs*

JSWolf · 10-06-2019, 10:31 AM

Quote:

Originally Posted by FulciLives

I did it after my last reply.

It did find errors which, according to the LOG, it was able to repair A-OK.

However, that seemed to make no changes with my Calibre issues.

I've gone back to 3.48 and everything appears to be fine just as it was before. My covers are showing up as they should.

Go figure *shrugs*

Try booting into safe mode and then installing Calibre 4.0. If it works, it's something you run when the system starts or a driver that gets loaded in normal mod but not safe mode.

BetterRed · 10-06-2019, 05:22 PM

@Kovid - I don't know if is this is relevant, but I'm puzzled

In Metadata Edit when I Browse for a cover I sometimes get this in the file type selector

Code:

"Images (*.png; *.jpeg; *.jpg; *.gif)"

at other times I get this

Code:

"Images (*.bmp; *.cur; *.gif; *.icns; *.ico; *.jpeg; *.jpg; *.pbm; *.pgm; *.png; *.ppm; *.svg; *.svgz; *.tga; *.tif; *.tiff; *.wbmp; *.webp; *.xbm; *.xpm)

In the Comments Editor Browse I've seen that long list, but I've also had the shorter list. And FulciLives gets this in Browse for a Cover

Code:

"Images (*.bmp; *.cur; *.pbm; *.pgm; *.png; *.ppm; *.xbm; *.xpm)

I can't find any pattern as to why i see different things in different places at different times - but I would have thought the file type list for "Images" should be a constant.

BR

kovidgoyal · 10-06-2019, 08:59 PM

It's just different code, in some places it uses the list of spported Qt images in others it uses a simpler hardcoded list.

FulciLives · 10-08-2019, 05:15 AM

It somehow just works in Calibre 3.48 despite not working for me in 4.0

[See Attached Image]

I see that 4.1 is out now but I'm afraid to try it.

Dopedangel · 10-08-2019, 05:32 AM

Quote:

Originally Posted by FulciLives

It somehow just works in Calibre 3.48 despite not working for me in 4.0

[See Attached Image]

I see that 4.1 is out now but I'm afraid to try it.

Could you try calibre portable instead of the install version. You can use it without uninstalling the current version.

kovidgoyal · 10-08-2019, 05:33 AM

Yeah 3.x is a different, much older version of Qt. So it's not surprising. I doubt 4.1 will help, there were no Qt image plugins or build changes.

You could try getting some debug output using the environment variable QT_DEBUG_PLUGINS=1 to see why Qt is failing to load its image plugins on your system.

Something like

Code:

set QT_DEBUG_PLUGINS=1
calibre-debug -c "from PyQt5.Qt import *; app = QApplication([]); print(QImageReader.supportedImageFormats())"

pclark999 · 06-11-2020, 12:04 PM

Hi - I have got a similar problem. Every time I install a new version of Calibre 4, i lose all cover art and the program won't let me add in new .jpg files as covers (says "ValueError: Failed to export image as JPEG with error:Unsupported image format"). The qtjpeg.dll file seems to be in the apps folder, but the program won't see any .jpg files in my library even though all are visible in v 3.48. I would like to upgrade to 4.18 now as also now having the problem with my paperwhite were cover art is being wiped whenever i connect online.

Anything you can suggest to help??

10-06-2019, 01:09 AM	#18
FulciLives Connoisseur Posts: 51 Karma: 218936 Join Date: Apr 2019 Location: Pittsburgh, PA [USA] Device: Kindle Oasis 2 (2017 Model)	Here's what I got... (Please See Attached Image) By the way, the only Anti-Virus that I am running is the one built into Windows 10 aka Windows Defender. Attached Thumbnails Last edited by FulciLives; 10-06-2019 at 01:17 AM.

10-06-2019, 05:22 PM	#25
BetterRed null operator (he/him) Posts: 21,628 Karma: 29710338 Join Date: Mar 2012 Location: Sydney Australia Device: none	@Kovid - I don't know if is this is relevant, but I'm puzzled In Metadata Edit when I Browse for a cover I sometimes get this in the file type selector Code: "Images (.png; .jpeg; .jpg; .gif)" at other times I get this Code: "Images (.bmp; .cur; .gif; .icns; .ico; .jpeg; .jpg; .pbm; .pgm; .png; .ppm; .svg; .svgz; .tga; .tif; .tiff; .wbmp; .webp; .xbm; .xpm) In the Comments Editor Browse I've seen that long list, but I've also had the shorter list. And FulciLives gets this in Browse for a Cover Code: "Images (.bmp; .cur; .pbm; .pgm; .png; .ppm; .xbm; .xpm) I can't find any pattern as to why i see different things in different places at different times - but I would have thought the file type list for "Images" should be a constant. BR

10-08-2019, 05:15 AM	#27
FulciLives Connoisseur Posts: 51 Karma: 218936 Join Date: Apr 2019 Location: Pittsburgh, PA [USA] Device: Kindle Oasis 2 (2017 Model)	It somehow just works in Calibre 3.48 despite not working for me in 4.0 [See Attached Image] I see that 4.1 is out now but I'm afraid to try it. Attached Thumbnails

10-08-2019, 05:33 AM	#29
kovidgoyal creator of calibre Posts: 45,190 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Yeah 3.x is a different, much older version of Qt. So it's not surprising. I doubt 4.1 will help, there were no Qt image plugins or build changes. You could try getting some debug output using the environment variable QT_DEBUG_PLUGINS=1 to see why Qt is failing to load its image plugins on your system. Something like Code: set QT_DEBUG_PLUGINS=1 calibre-debug -c "from PyQt5.Qt import *; app = QApplication([]); print(QImageReader.supportedImageFormats())"

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Calibre e book covers	lostsoul	Library Management	12	05-15-2014 12:48 AM
How do I change book covers with Calibre?	alessandrocar88	Devices	11	10-10-2013 04:46 PM
Calibre and book covers to Sony reader	windmill	Calibre	18	07-20-2011 11:59 AM
Book Covers in Calibre but not on Kobo...	covingtoncat73	Calibre	3	06-18-2011 12:59 PM
Epub book covers in calibre	zhuxi13	Calibre	1	02-06-2010 07:56 PM

10-05-2019, 06:07 PM	#16
BetterRed null operator (he/him) Posts: 21,628 Karma: 29710338 Join Date: Mar 2012 Location: Sydney Australia Device: none	Try this ==>> Use the System File Checker tool to repair missing or corrupted system files BR

10-05-2019, 08:14 PM	#17
kovidgoyal creator of calibre Posts: 45,190 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Yeah the list of image file extensiosn comes from the supported image formats in Qt. Which in turn comes from the list of qt image plugins. For some reason on your system the image plugins are not being picked up. Check if they have been quarantined by an antivirus. The plugin files are in app/plugins/imageformats inside the calibr installation folder. It should contain the files qgif.dll qicns.dll qico.dll qjpeg.dll qsvg.dll qtga.dll qtiff.dll qwbmp.dll qwebp.dll

10-06-2019, 01:48 AM	#19
kovidgoyal creator of calibre Posts: 45,190 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Then I'm at a loss, sorry, I sugget downgrading to 3.48 for the moment.

10-06-2019, 02:22 AM	#20
FulciLives Connoisseur Posts: 51 Karma: 218936 Join Date: Apr 2019 Location: Pittsburgh, PA [USA] Device: Kindle Oasis 2 (2017 Model)	My apologies. I feel like I've been a thorn in your side here since it seems I'm the only one having the issue. I guess I will go back to 3.48 for now. Cheers and thank you very much for your time.

10-06-2019, 02:26 AM	#21
kovidgoyal creator of calibre Posts: 45,190 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	No worries, big updates to Qt like this one always have a few system where weird things happen. Hopefully once things settle down, a solution will be found.

10-06-2019, 08:59 PM	#26
kovidgoyal creator of calibre Posts: 45,190 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	It's just different code, in some places it uses the list of spported Qt images in others it uses a simpler hardcoded list.

06-11-2020, 12:04 PM	#30
pclark999 Junior Member Posts: 1 Karma: 10 Join Date: Jun 2020 Device: Kindle Paperwhite	Hi - I have got a similar problem. Every time I install a new version of Calibre 4, i lose all cover art and the program won't let me add in new .jpg files as covers (says "ValueError: Failed to export image as JPEG with error:Unsupported image format"). The qtjpeg.dll file seems to be in the apps folder, but the program won't see any .jpg files in my library even though all are visible in v 3.48. I would like to upgrade to 4.18 now as also now having the problem with my paperwhite were cover art is being wiped whenever i connect online. Anything you can suggest to help??

Advert

Advert