[ballfresno]

This plugin has also stopped working for me (Debian Linux with calibre from Debian v6.13). It's been a few weeks since I last used it. I have tried installing the bugfix version:

calibre, version 6.13.0
ERROR: Unhandled exception: <b>InvalidPlugin</b>:Initialization of plugin Traceback (most recent call last):
  File "/usr/lib/calibre/calibre/customize/ui.py", line 677, in initialize_plugin
    p.initialize()
  File "calibre_plugins.deacsm.__init__", line 226, in initialize
    from libadobe import createDeviceKeyFile, update_account_path, sendHTTPRequest
  File "/home/ucecesf/Downloads/ACSMInput_0.0.16-bugfix.zip/libadobe.py", line 59, in &lt;module&gt;
    from oscrypto import keys
  File "/home/ucecesf/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/keys.py", line 5, in &lt;module&gt;
    from ._asymmetric import parse_certificate, parse_private, parse_public
  File "/home/ucecesf/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_asymmetric.py", line 27, in &lt;module&gt;
    from .kdf import pbkdf1, pbkdf2, pkcs12_kdf
  File "/home/ucecesf/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/kdf.py", line 9, in &lt;module&gt;
    from .util import rand_bytes
  File "/home/ucecesf/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/util.py", line 14, in &lt;module&gt;
    from ._openssl.util import rand_bytes
  File "/home/ucecesf/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/util.py", line 6, in &lt;module&gt;
    from ._libcrypto import libcrypto, libcrypto_version_info, handle_openssl_error
  File "/home/ucecesf/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/_libcrypto.py", line 24, in &lt;module&gt;
    from ._libcrypto_ctypes import (
  File "/home/ucecesf/.config/calibre/plugins/DeACSM/modules/oscrypto/oscrypto/_openssl/_libcrypto_ctypes.py", line 47, in &lt;module&gt;
    raise LibraryNotFoundError('Error detecting the version of libcrypto')
oscrypto.errors.LibraryNotFoundError: Error detecting the version of libcrypto

I tried downgrading openssl to 3.0.9 (pre .10 basically) and also installing calibre from its website, version 6.29 I think, but no luck.

Any suggestions very much appreciated! Thank you.

I try not to buy DRM books but sometimes I give in to temptation. This is one of those times.