Calibre Will not open.

Yahtahei · 01-10-2023, 10:24 AM

Running MacBook Pro (Apple M1Pro) Mac OS v13.1 (Ventura) and have downloaded the newest Calibre version 6.11.0 because the older version (16.10) would not open. Now neither version will open. I have uninstalled both using uninstaller and reinstalled the newer version, no joy. Even tried an earlier version, but none will open. Any assistance would be greatly appreciated.

kovidgoyal · 01-10-2023, 11:00 AM

Open terminal.app and run the command

/Applications/calibre.app/Contents/MacOS/calibre-debug -g

and post the output

Yahtahei · 01-10-2023, 11:18 AM

Quote:

Originally Posted by kovidgoyal

Open terminal.app and run the command

/Applications/calibre.app/Contents/MacOS/calibre-debug -g

and post the output

Thanks for your response.

Output:
Last login: Tue Jan 10 11:15:10 on ttys000
yahtahei@SYahtaheisMBP16 ~ % /Applications/calibre.app/Contents/MacOS/calibre-debug -g
zsh: no such file or directory: /Applications/calibre.app/Contents/MacOS/calibre-debug
yahtahei@SYahtaheisMBP16 ~ %

Yahtahei · 01-10-2023, 12:55 PM

The issue was the location of the Calibre App. I had moved the Calibre app from the Application Folder to a Folder within the Application Folder, which I had named "eBook apps" because I use more than one of these apps. After moving the Calibre App out of the eBook apps Folder and back to the original Application folder, the Calibre v6.11 application opened without issue.

I ran the suggested Terminal command again and received this output:

Last login: Tue Jan 10 12:43:27 on ttys001
yahtahei@SYahtaheisMBP16 ~ % /Applications/calibre.app/Contents/MacOS/calibre-debug -g
calibre 6.11 embedded-python: True
macOS-13.1-arm64-arm-64bit Darwin ('64bit', '')
('Darwin', '22.2.0', 'Darwin Kernel Version 22.2.0: Fri Nov 11 02:03:51 PST 2022; root:xnu-8792.61.2~4/RELEASE_ARM64_T6000')
Python 3.10.1
OSX: ('13.1', ('', '', ''), 'arm64')
Interface language: None
QPA platform: cocoa
devicePixelRatio: 2.0
logicalDpi: 72.0 x 72.0
physicalDpi: 30.0000004505548 x 30.0000004505548
Using calibre Qt style: True
yahtahei@SYahtaheisMBP16 ~ %

Thanks again for your assistance.

bleepingcomputer · 01-11-2023, 11:37 PM

Quote:

Originally Posted by Yahtahei

Running MacBook Pro (Apple M1Pro) Mac OS v13.1 (Ventura) and have downloaded the newest Calibre version 6.11.0 because the older version (16.10) would not open. Now neither version will open. I have uninstalled both using uninstaller and reinstalled the newer version, no joy. Even tried an earlier version, but none will open. Any assistance would be greatly appreciated.

Hello, I am having the same issue in Windows 10. I cannot open the software in regular mode, I have made sure the security permissions are there for me and all users on my PC, but it still won't open. I've had to reset windows some time ago, and since I've reinstalled Calibre (just recently), it won't open. I've also debugged, run CFC in the command prompt as admin, and I've tried opening as an admin. All to no avail. I *CAN* open the software (latest version 6.11) in safe mode.

I've also run debug in CMD as noted in Calibre's FAQs section. Here is what I get:

C:\WINDOWS\system32>calibre-debug -g
calibre 6.11 embedded-python: True
Windows-10-10.0.19045-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '10', '10.0.19045')
Python 3.10.1
Windows: ('10', '10.0.19045', 'SP0', 'Multiprocessor Free')
Interface language: None

C:\WINDOWS\system32>

I've reinstalled and uninstalled multiple times, and multiple versions. I've deleted the old file meta-data.db.

So now I am at my last resort, posting on the forum. For the record, I've looked at the other notes of people having the same issue as mine, and none of the fixes seem to help (other than resetting/reinstalling windows).

Please help, as I love Calibre and managing my books on there. Thanks

bleepingcomputer · 01-12-2023, 01:09 AM

Also, I tried to open Calibre Portable, and it did not work. It is doing the same thing, ie not opening when I double click on it/run as administrator.

BetterRed · 01-12-2023, 02:46 AM

Interface language: None looks suss to me.

Can't say more, I'm on a sat phone, maybe someone else can say more.

kovidgoyal · 01-12-2023, 04:33 AM

If its opening in safe mode then you have some software running on your computer that is interfering. Most likely an antivirus. Try disabling it.

bleepingcomputer · 01-12-2023, 04:46 PM

I have tried disabling antivirus (MalwareBytes and McAfee) to no avail.

bleepingcomputer · 01-12-2023, 07:10 PM

Also, I uninstalled my antivirus (McAfee) because it was hard to disable all of it at once.

kovidgoyal · 01-12-2023, 09:28 PM

Then it will be something else, impossible for me to say what since I have no idea what all you have running on your machine.

bleepingcomputer · 01-15-2023, 12:45 AM

Have people had issues with Calibre if their video card isn't the best? That's what I suspect, but have no way of testing this. I just know that it'll run in safe mode. I've had video card issues in the past and my CMD chip is rather old so I'm in the process of acquiring new hardware to build a new computer. I will probably just wait until I get my new machine set up and try it then. Not sure what else to do, I've used msconfig to stop all programs from running and it still won't open.

theducks · 01-15-2023, 08:37 AM

Quote:

Originally Posted by bleepingcomputer

Have people had issues with Calibre if their video card isn't the best? That's what I suspect, but have no way of testing this. I just know that it'll run in safe mode. I've had video card issues in the past and my CMD chip is rather old so I'm in the process of acquiring new hardware to build a new computer. I will probably just wait until I get my new machine set up and try it then. Not sure what else to do, I've used msconfig to stop all programs from running and it still won't open.

Calibre runs on really old graphics HW just fine.
One of my systems did not support HD monitors, I use 2 Diamond USB video modules (a bit slow, but I don't use for Movies

)

bleepingcomputer · 01-17-2023, 12:38 AM

Interesting. I figured Calibre would run on old graphics, just not on my system, haha. I've had several BSOD instances over the years, and while my system is over 10 years old and still working, I probably shouldn't put on a game to potentially challenge it.

I guess I could just run Calibre in safe mode, even though it's inconvenient. I'll be back on here if it doesn't work on my new computer I'm getting ready to build!

BetterRed · 01-17-2023, 04:15 AM

@bleepingcomputer - If calibre works in Safe mode but not in Normal mode then the problem is almost certain to be a misbehaving program that you run at start up.

Simplest way to prove that is to use Task Manager to disable 3rd party programs and Microsoft bloat in Startup, reboot and start calibre. If calibre works then you'll have discover which program is causing the problem by a process of elimination, e.g. a binary chop.

Many of the programs that are intended to run at start up also have auto-update features. If I can, I turn that off, otherwise I look for an alternative that doesn't auto-update.

BR

01-10-2023, 10:24 AM	#1
Yahtahei Junior Member Posts: 3 Karma: 10 Join Date: Jan 2023 Device: Mac OS	Calibre Will not open. Running MacBook Pro (Apple M1Pro) Mac OS v13.1 (Ventura) and have downloaded the newest Calibre version 6.11.0 because the older version (16.10) would not open. Now neither version will open. I have uninstalled both using uninstaller and reinstalled the newer version, no joy. Even tried an earlier version, but none will open. Any assistance would be greatly appreciated.

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01-10-2023, 11:00 AM	#2
kovidgoyal creator of calibre Posts: 43,858 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Open terminal.app and run the command /Applications/calibre.app/Contents/MacOS/calibre-debug -g and post the output

01-10-2023, 12:55 PM	#4
Yahtahei Junior Member Posts: 3 Karma: 10 Join Date: Jan 2023 Device: Mac OS	The issue was the location of the Calibre App. I had moved the Calibre app from the Application Folder to a Folder within the Application Folder, which I had named "eBook apps" because I use more than one of these apps. After moving the Calibre App out of the eBook apps Folder and back to the original Application folder, the Calibre v6.11 application opened without issue. I ran the suggested Terminal command again and received this output: Last login: Tue Jan 10 12:43:27 on ttys001 yahtahei@SYahtaheisMBP16 ~ % /Applications/calibre.app/Contents/MacOS/calibre-debug -g calibre 6.11 embedded-python: True macOS-13.1-arm64-arm-64bit Darwin ('64bit', '') ('Darwin', '22.2.0', 'Darwin Kernel Version 22.2.0: Fri Nov 11 02:03:51 PST 2022; root:xnu-8792.61.2~4/RELEASE_ARM64_T6000') Python 3.10.1 OSX: ('13.1', ('', '', ''), 'arm64') Interface language: None QPA platform: cocoa devicePixelRatio: 2.0 logicalDpi: 72.0 x 72.0 physicalDpi: 30.0000004505548 x 30.0000004505548 Using calibre Qt style: True yahtahei@SYahtaheisMBP16 ~ % Thanks again for your assistance.

01-12-2023, 01:09 AM	#6
bleepingcomputer Junior Member Posts: 6 Karma: 10 Join Date: Jan 2023 Device: Amazon Paperwhite	Also, I tried to open Calibre Portable, and it did not work. It is doing the same thing, ie not opening when I double click on it/run as administrator.

01-12-2023, 02:46 AM	#7
BetterRed null operator (he/him) Posts: 20,570 Karma: 26954694 Join Date: Mar 2012 Location: Sydney Australia Device: none	Interface language: None looks suss to me. Can't say more, I'm on a sat phone, maybe someone else can say more.

01-12-2023, 04:33 AM	#8
kovidgoyal creator of calibre Posts: 43,858 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	If its opening in safe mode then you have some software running on your computer that is interfering. Most likely an antivirus. Try disabling it.

01-12-2023, 04:46 PM	#9
bleepingcomputer Junior Member Posts: 6 Karma: 10 Join Date: Jan 2023 Device: Amazon Paperwhite	I have tried disabling antivirus (MalwareBytes and McAfee) to no avail.

01-12-2023, 07:10 PM	#10
bleepingcomputer Junior Member Posts: 6 Karma: 10 Join Date: Jan 2023 Device: Amazon Paperwhite	Also, I uninstalled my antivirus (McAfee) because it was hard to disable all of it at once.

01-12-2023, 09:28 PM	#11
kovidgoyal creator of calibre Posts: 43,858 Karma: 22666666 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Then it will be something else, impossible for me to say what since I have no idea what all you have running on your machine.

01-15-2023, 12:45 AM	#12
bleepingcomputer Junior Member Posts: 6 Karma: 10 Join Date: Jan 2023 Device: Amazon Paperwhite	Have people had issues with Calibre if their video card isn't the best? That's what I suspect, but have no way of testing this. I just know that it'll run in safe mode. I've had video card issues in the past and my CMD chip is rather old so I'm in the process of acquiring new hardware to build a new computer. I will probably just wait until I get my new machine set up and try it then. Not sure what else to do, I've used msconfig to stop all programs from running and it still won't open.

01-17-2023, 12:38 AM	#14
bleepingcomputer Junior Member Posts: 6 Karma: 10 Join Date: Jan 2023 Device: Amazon Paperwhite	Interesting. I figured Calibre would run on old graphics, just not on my system, haha. I've had several BSOD instances over the years, and while my system is over 10 years old and still working, I probably shouldn't put on a game to potentially challenge it. I guess I could just run Calibre in safe mode, even though it's inconvenient. I'll be back on here if it doesn't work on my new computer I'm getting ready to build!

01-17-2023, 04:15 AM	#15
BetterRed null operator (he/him) Posts: 20,570 Karma: 26954694 Join Date: Mar 2012 Location: Sydney Australia Device: none	@bleepingcomputer - If calibre works in Safe mode but not in Normal mode then the problem is almost certain to be a misbehaving program that you run at start up. Simplest way to prove that is to use Task Manager to disable 3rd party programs and Microsoft bloat in Startup, reboot and start calibre. If calibre works then you'll have discover which program is causing the problem by a process of elimination, e.g. a binary chop. Many of the programs that are intended to run at start up also have auto-update features. If I can, I turn that off, otherwise I look for an alternative that doesn't auto-update. BR