Problems downloading Calibre v. 8.13.0

Leonatus · 10-17-2025, 06:08 AM

Linux Mint 22.2 Cinnamon v. 6.4.8.
When I enter the suggested command from the Calibre download site in the terminal, download proceeds, but then I get the message:

Code:

Checking downloaded file integrity... 
The downloaded files' signature does not match. Try the download again later.

I tried several times, but it's always the same. I'm new to Linux, so perhaps it's nothing, but I'm worrying nevertheless. Any help (much appreciated!)?

rantanplan · 10-17-2025, 06:11 AM

Are you downloading from the homepage or the Linux Mint repository? Or Flatpak?

Leonatus · 10-17-2025, 07:08 AM

From the Calibre download site (homepage), as mentioned above.

dunhill · 10-17-2025, 07:35 AM

2025-10-17 12:02:31 URL:https://download.calibre-ebook.com/linux-installer.sh [35050/35050] -> "-" [1]
Using python executable: /usr/bin/python3
Installing to /opt/calibre
Downloading tarball signature securely...
Will download and install calibre-8.13.0-x86_64.txz
Downloading calibre-8.13.0-x86_64.txz
100% [=========================]
Downloaded 2235 bytes
Checking downloaded file integrity...
The downloaded files' signature does not match. Try the download again later

Leonatus · 10-17-2025, 07:42 AM

I encounter the very same message.

JSWolf · 10-17-2025, 08:07 AM

For the Windows download, then you click the Download calibre 64bit link, you go to https://calibre-ebook.com/dist/win64 which is incorrect.

To download 8.13, you need to use the Alternate download location link.

kovidgoyal · 10-17-2025, 08:07 AM

It's probably because the download server had to rebuilt there is some bug, I'll look into it in a little while.

kovidgoyal · 10-17-2025, 08:22 AM

SHould be fine now, for some reason the upload script uploaded the installers to the old server rather than the new one (DNS TTL isssues?). Will investigate why later, but for the moment just copied them over manually from the old server.

JSWolf · 10-17-2025, 08:24 AM

Quote:

Originally Posted by kovidgoyal

SHould be fine now, for some reason the upload script uploaded the installers to the old server rather than the new one (DNS TTL isssues?). Will investigate why later, but for the moment just copied them over manually from the old server.

Same problem with Windows.

kovidgoyal · 10-17-2025, 08:27 AM

Ah, it was a stale entry in my ~/.ssh/config pointing to the old server under an otherwise unused hostname.

Leonatus · 10-17-2025, 10:29 AM

It works now! Thank you!

10-17-2025, 06:08 AM	#1
Leonatus Wizard Posts: 1,088 Karma: 11502975 Join Date: Mar 2013 Location: Guben, Brandenburg, Germany Device: Kobo Clara 2E, Tolino Shine 3	Problems downloading Calibre v. 8.13.0 Linux Mint 22.2 Cinnamon v. 6.4.8. When I enter the suggested command from the Calibre download site in the terminal, download proceeds, but then I get the message: Code: Checking downloaded file integrity... The downloaded files' signature does not match. Try the download again later. I tried several times, but it's always the same. I'm new to Linux, so perhaps it's nothing, but I'm worrying nevertheless. Any help (much appreciated!)?

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10-17-2025, 06:11 AM	#2
rantanplan Weirdo Posts: 937 Karma: 11941602 Join Date: Nov 2019 Location: Wuppertal, Germany Device: Kobo Sage, Kobo Libra 2, Kindle Paperwhite 2021, Kindle Scribe 2022	Are you downloading from the homepage or the Linux Mint repository? Or Flatpak?

10-17-2025, 07:08 AM	#3
Leonatus Wizard Posts: 1,088 Karma: 11502975 Join Date: Mar 2013 Location: Guben, Brandenburg, Germany Device: Kobo Clara 2E, Tolino Shine 3	From the Calibre download site (homepage), as mentioned above.

10-17-2025, 07:35 AM	#4
dunhill Guru Posts: 923 Karma: 810834 Join Date: Sep 2017 Location: Buenos Aires, Argentina Device: moon+ reader, kindle paperwhite	2025-10-17 12:02:31 URL:https://download.calibre-ebook.com/linux-installer.sh [35050/35050] -> "-" [1] Using python executable: /usr/bin/python3 Installing to /opt/calibre Downloading tarball signature securely... Will download and install calibre-8.13.0-x86_64.txz Downloading calibre-8.13.0-x86_64.txz 100% [=========================] Downloaded 2235 bytes Checking downloaded file integrity... The downloaded files' signature does not match. Try the download again later

10-17-2025, 07:42 AM	#5
Leonatus Wizard Posts: 1,088 Karma: 11502975 Join Date: Mar 2013 Location: Guben, Brandenburg, Germany Device: Kobo Clara 2E, Tolino Shine 3	I encounter the very same message.

10-17-2025, 08:07 AM	#6
JSWolf Resident Curmudgeon Posts: 80,789 Karma: 150249619 Join Date: Nov 2006 Location: Roslindale, Massachusetts Device: Kobo Libra 2, Kobo Aura H2O, PRS-650, PRS-T1, nook STR, PW3	For the Windows download, then you click the Download calibre 64bit link, you go to https://calibre-ebook.com/dist/win64 which is incorrect. To download 8.13, you need to use the Alternate download location link.

10-17-2025, 08:07 AM	#7
kovidgoyal creator of calibre Posts: 45,609 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	It's probably because the download server had to rebuilt there is some bug, I'll look into it in a little while.

10-17-2025, 08:22 AM	#8
kovidgoyal creator of calibre Posts: 45,609 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	SHould be fine now, for some reason the upload script uploaded the installers to the old server rather than the new one (DNS TTL isssues?). Will investigate why later, but for the moment just copied them over manually from the old server.

10-17-2025, 08:27 AM	#10
kovidgoyal creator of calibre Posts: 45,609 Karma: 28549044 Join Date: Oct 2006 Location: Mumbai, India Device: Various	Ah, it was a stale entry in my ~/.ssh/config pointing to the old server under an otherwise unused hostname.

10-17-2025, 10:29 AM	#11
Leonatus Wizard Posts: 1,088 Karma: 11502975 Join Date: Mar 2013 Location: Guben, Brandenburg, Germany Device: Kobo Clara 2E, Tolino Shine 3	It works now! Thank you!

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