[FileType Plugin] ACSM input plugin - Page 45

Katherine1 · 02-18-2026, 12:01 PM

Quote:

Originally Posted by Section8

@Katherine1 - I am a Nixos newb and have also seen this, but haven't gotten around to dealing with it. Can you share your nix-shell magic?

I used

Code:

nix-shell -p openssl calibre --run calibre

This stands up a temporary environment that contains both openssl and calibre, and runs calibre. Because I've got both in my configuration.nix, they're already installed and nothing needs to download. It just starts up and works.

I think this can also be accomplished with a flake, but I'm still learning a ton, so I don't have that figured out yet. For now, I just edited my calibre .desktop file to use the nix-shell command and it just works.

Section8 · 02-19-2026, 10:35 AM

Thank-you. It looks like that worked. I am also trying to figure out what you can do with flakes. Maybe figuring out how to do this with a flake will provide some motivation.

JSWolf · 02-19-2026, 04:35 PM

Quote:

Originally Posted by Section8

Thank-you. It looks like that worked. I am also trying to figure out what you can do with flakes. Maybe figuring out how to do this with a flake will provide some motivation.

Read this...

https://www.reddit.com/r/NixOS/comme...ake_is_like_im

unclechromedome · 02-24-2026, 11:24 PM

I'm a *very* new user to Calibre - I can't d/l the ACSM Input plugin. The error told me to post this to the forum. I read as many posts as I could bear and downloaded some zip files containing py files, but I'm not sure what to execute. Can you help?
calibre, version 7.6.0
ERROR: Install plugin failed: A problem occurred while installing this plugin. This plugin will now be uninstalled. Please post the error message in details below into the forum thread for this plugin and restart calibre.

Spoiler:

pdurrant · 02-25-2026, 02:34 AM

Quote:

Originally Posted by unclechromedome

I'm a *very* new user to Calibre - I can't d/l the ACSM Input plugin. The error told me to post this to the forum. I read as many posts as I could bear and downloaded some zip files containing py files, but I'm not sure what to execute. Can you help?
calibre, version 7.6.0
ERROR: Install plugin failed: A problem occurred while installing this plugin. This plugin will now be uninstalled. Please post the error message in details below into the forum thread for this plugin and restart calibre.

The relevant part of the log is

Code:

_openssl/_libcrypto_ctypes.py", line 47, in <module>
    raise LibraryNotFoundError('Error detecting the version of libcrypto')
oscrypto.errors.LibraryNotFoundError: Error detecting the version of libcrypto

libcrypto is usually part of openSSL You could try installing openSSL.

Or you could try downloading the current Calibre package for your system, see https://calibre-ebook.com/download

(Calibre 7 is really quite old. the current version is 9.3.1!)

JSWolf · 02-25-2026, 05:18 AM

Quote:

Originally Posted by unclechromedome

I'm a *very* new user to Calibre - I can't d/l the ACSM Input plugin. The error told me to post this to the forum. I read as many posts as I could bear and downloaded some zip files containing py files, but I'm not sure what to execute. Can you help?
calibre, version 7.6.0
ERROR: Install plugin failed: A problem occurred while installing this plugin. This plugin will now be uninstalled. Please post the error message in details below into the forum thread for this plugin and restart calibre.

Spoiler:

Install openSSL and calibre 9.3.1 and then try again. Do not download calibre from any distro. Download it from the official calibre website.

unclechromedome · 02-27-2026, 12:30 AM

Thank you for your help. I had installed Calibre from the distro. I didn't realize it was so old. Once I had the updated Calibre, the plugin installed immediately.

JSWolf · 02-27-2026, 01:02 PM

Quote:

Originally Posted by unclechromedome

Thank you for your help. I had installed Calibre from the distro. I didn't realize it was so old. Once I had the updated Calibre, the plugin installed immediately.

This is why you should never ever install calibre from any distro and always install from the official website.

tomsem · 03-03-2026, 01:38 PM

An .ascm has failed to decode. It worked a month ago, I have not changed anything that I can point to apart from updating calibre itself.

How to troubleshoot this?

DNSB · 03-03-2026, 01:46 PM

Quote:

Originally Posted by tomsem

An .ascm has failed to decode. It worked a month ago, I have not changed anything that I can point to apart from updating calibre itself.

How to troubleshoot this?

Has the .acsm file expired? If you look at the .acsm file with a text editor, you may see something like the following lines:

Code:

  <purchase>2026-02-28T18:19:19-05:00</purchase>
  <expiration>2026-03-01T00:19:19-05:00</expiration>

tomsem · 03-03-2026, 01:51 PM

No, it seems the vendor's ACSM service was offline for a few minutes: I could not even download the ascm file again. I tried again and it decoded as expected.

DNSB · 03-03-2026, 06:01 PM

I've had that happen a couple of times where the vendor for whatever reason was not accessible.

dearleuk · Yesterday, 06:43 AM

This has been working great for me with ebooks. I borrowed a magazine last week and while it seemed fine, when I went to return the magazine using shon loaned books button in the plugin, I got the following error

calibre, version 8.4.0
ERROR: Unhandled exception: <b>TypeError</b>:unsupported operand type(s) for +: 'NoneType' and 'str'

calibre 8.4 embedded-python: True
Linux-6.14.0-37-generic-x86_64-with-glibc2.41 Linux ('64bit', 'ELF')
('Linux', '6.14.0-37-generic', '#37-Ubuntu SMP PREEMPT_DYNAMIC Fri Nov 14 22:10:32 UTC 2025')
Python 3.11.12
Interface language: None
EXE path: /opt/calibre/bin/calibre
Successfully initialized third party plugins: DeACSM (0, 0, 16) && DeDRM (10, 0, 3)
Traceback (most recent call last):
File "calibre_plugins.deacsm.config", line 1298, in show_rented_books
d = RentedBooksDialog(self, self.deacsmprefs["list_of_rented_books"])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^
File "calibre_plugins.deacsm.config", line 1321, in __init__
self.populate_list()
File "calibre_plugins.deacsm.config", line 1398, in populate_list
item = QListWidgetItem(book["book_name"] + " " + info)
~~~~~~~~~~~~~~~~~~^~~~~
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'

Tried removing the plugin and re-installing, but I still get the error.

Does anyone know how I can resolve this please?

02-24-2026, 11:24 PM	#664
unclechromedome Junior Member Posts: 2 Karma: 10 Join Date: Feb 2026 Device: Linux Ubuntu 24.04 Desktop / Calibre	I'm a very new user to Calibre - I can't d/l the ACSM Input plugin. The error told me to post this to the forum. I read as many posts as I could bear and downloaded some zip files containing py files, but I'm not sure what to execute. Can you help? calibre, version 7.6.0 ERROR: Install plugin failed: A problem occurred while installing this plugin. This plugin will now be uninstalled. Please post the error message in details below into the forum thread for this plugin and restart calibre. Spoiler: Traceback (most recent call last): File "/usr/lib/calibre/calibre/customize/ui.py", line 710, in initialize_plugin p.initialize() File "calibre_plugins.deacsm.__init__", line 226, in initialize from libadobe import createDeviceKeyFile, update_account_path, sendHTTPRequest File "/tmp/calibre_7.6.0_tmp_v7cxj5i4/s1tzyh14.zip/libadobe.py", line 59, in <module> from oscrypto import keys File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/keys.py", line 5, in <module> from ._asymmetric import parse_certificate, parse_private, parse_public File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_asymmetric.py", line 27, in <module> from .kdf import pbkdf1, pbkdf2, pkcs12_kdf File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/kdf.py", line 9, in <module> from .util import rand_bytes File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/util.py", line 14, in <module> from ._openssl.util import rand_bytes File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/util.py", line 6, in <module> from ._libcrypto import libcrypto, libcrypto_version_info, handle_openssl_error File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/_libcrypto.py", line 24, in <module> from ._libcrypto_ctypes import ( File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/_libcrypto_ctypes.py", line 47, in <module> raise LibraryNotFoundError('Error detecting the version of libcrypto') oscrypto.errors.LibraryNotFoundError: Error detecting the version of libcrypto During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/calibre/calibre/gui2/dialogs/plugin_updater.py", line 729, in _install_clicked plugin = add_plugin(zip_path) ^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/calibre/calibre/customize/ui.py", line 520, in add_plugin plugin = initialize_plugin(plugin, path_to_zip_file, PluginInstallationType.EXTERNAL) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/calibre/calibre/customize/ui.py", line 715, in initialize_plugin raise InvalidPlugin((_('Initialization of plugin %s failed with traceback:') calibre.customize.InvalidPlugin: Initialization of plugin Traceback (most recent call last): File "/usr/lib/calibre/calibre/customize/ui.py", line 710, in initialize_plugin p.initialize() File "calibre_plugins.deacsm.__init__", line 226, in initialize from libadobe import createDeviceKeyFile, update_account_path, sendHTTPRequest File "/tmp/calibre_7.6.0_tmp_v7cxj5i4/s1tzyh14.zip/libadobe.py", line 59, in <module> from oscrypto import keys File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/keys.py", line 5, in <module> from ._asymmetric import parse_certificate, parse_private, parse_public File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_asymmetric.py", line 27, in <module> from .kdf import pbkdf1, pbkdf2, pkcs12_kdf File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/kdf.py", line 9, in <module> from .util import rand_bytes File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/util.py", line 14, in <module> from ._openssl.util import rand_bytes File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/util.py", line 6, in <module> from ._libcrypto import libcrypto, libcrypto_version_info, handle_openssl_error File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/_libcrypto.py", line 24, in <module> from ._libcrypto_ctypes import ( File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/_libcrypto_ctypes.py", line 47, in <module> raise LibraryNotFoundError('Error detecting the version of libcrypto') oscrypto.errors.LibraryNotFoundError: Error detecting the version of libcrypto failed with traceback: Traceback (most recent call last): File "/usr/lib/calibre/calibre/customize/ui.py", line 710, in initialize_plugin p.initialize() File "calibre_plugins.deacsm.__init__", line 226, in initialize from libadobe import createDeviceKeyFile, update_account_path, sendHTTPRequest File "/tmp/calibre_7.6.0_tmp_v7cxj5i4/s1tzyh14.zip/libadobe.py", line 59, in <module> from oscrypto import keys File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/keys.py", line 5, in <module> from ._asymmetric import parse_certificate, parse_private, parse_public File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_asymmetric.py", line 27, in <module> from .kdf import pbkdf1, pbkdf2, pkcs12_kdf File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/kdf.py", line 9, in <module> from .util import rand_bytes File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/util.py", line 14, in <module> from ._openssl.util import rand_bytes File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/util.py", line 6, in <module> from ._libcrypto import libcrypto, libcrypto_version_info, handle_openssl_error File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/_libcrypto.py", line 24, in <module> from ._libcrypto_ctypes import ( File "/home/cfrench/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/_libcrypto_ctypes.py", line 47, in <module> raise LibraryNotFoundError('Error detecting the version of libcrypto') oscrypto.errors.LibraryNotFoundError: Error detecting the version of libcrypto Last edited by theducks; 02-24-2026 at 11:40 PM. Reason: SPOILER LOG files

Yesterday, 06:43 AM	#673
dearleuk Enthusiast Posts: 45 Karma: 10 Join Date: Oct 2008 Device: sony	This has been working great for me with ebooks. I borrowed a magazine last week and while it seemed fine, when I went to return the magazine using shon loaned books button in the plugin, I got the following error calibre, version 8.4.0 ERROR: Unhandled exception: <b>TypeError</b>:unsupported operand type(s) for +: 'NoneType' and 'str' calibre 8.4 embedded-python: True Linux-6.14.0-37-generic-x86_64-with-glibc2.41 Linux ('64bit', 'ELF') ('Linux', '6.14.0-37-generic', '#37-Ubuntu SMP PREEMPT_DYNAMIC Fri Nov 14 22:10:32 UTC 2025') Python 3.11.12 Interface language: None EXE path: /opt/calibre/bin/calibre Successfully initialized third party plugins: DeACSM (0, 0, 16) && DeDRM (10, 0, 3) Traceback (most recent call last): File "calibre_plugins.deacsm.config", line 1298, in show_rented_books d = RentedBooksDialog(self, self.deacsmprefs["list_of_rented_books"]) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^ File "calibre_plugins.deacsm.config", line 1321, in __init__ self.populate_list() File "calibre_plugins.deacsm.config", line 1398, in populate_list item = QListWidgetItem(book["book_name"] + " " + info) ~~~~~~~~~~~~~~~~~~^~~~~ TypeError: unsupported operand type(s) for +: 'NoneType' and 'str' Tried removing the plugin and re-installing, but I still get the error. Does anyone know how I can resolve this please? Last edited by dearleuk; Yesterday at 12:15 PM.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[FileType Plugin] GetFileName	Terisa de morgan	Plugins	417	07-16-2024 03:37 AM
[FileType Plugin] YVES Bible Plugin	ClashTheBunny	Plugins	27	01-16-2023 01:25 AM
help with epub on_import filetype plugin	digitalvideo	Development	4	02-27-2020 05:13 AM
Question about file_types in FileType plugin	Terisa de morgan	Plugins	6	02-08-2017 05:53 AM
Zip Filetype Plugin?	rsingley	Plugins	7	02-11-2011 05:11 PM

02-19-2026, 10:35 AM	#662
Section8 Addict Posts: 270 Karma: 2121470 Join Date: Oct 2011 Location: Arlington, TX Device: Kobo Libra Color, Kindle PW4, Koreader on a cheap Android tablet	Thank-you. It looks like that worked. I am also trying to figure out what you can do with flakes. Maybe figuring out how to do this with a flake will provide some motivation.

02-27-2026, 12:30 AM	#667
unclechromedome Junior Member Posts: 2 Karma: 10 Join Date: Feb 2026 Device: Linux Ubuntu 24.04 Desktop / Calibre	Thank you for your help. I had installed Calibre from the distro. I didn't realize it was so old. Once I had the updated Calibre, the plugin installed immediately.

03-03-2026, 01:38 PM	#669
tomsem Grand Sorcerer Posts: 7,144 Karma: 28000001 Join Date: Apr 2009 Location: USA Device: iPhone 15PM, Kindle Scribe, iPad mini 6, PocketBook InkPad Color 3	An .ascm has failed to decode. It worked a month ago, I have not changed anything that I can point to apart from updating calibre itself. How to troubleshoot this?

03-03-2026, 01:51 PM	#671
tomsem Grand Sorcerer Posts: 7,144 Karma: 28000001 Join Date: Apr 2009 Location: USA Device: iPhone 15PM, Kindle Scribe, iPad mini 6, PocketBook InkPad Color 3	No, it seems the vendor's ACSM service was offline for a few minutes: I could not even download the ascm file again. I tried again and it decoded as expected.

03-03-2026, 06:01 PM	#672
DNSB Bibliophagist Posts: 50,734 Karma: 178402706 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	I've had that happen a couple of times where the vendor for whatever reason was not accessible.