[GUI Plugin] Check Books

[mallomar]

Thiago meu –

I'm having a couple issues. for some reason clicking on ACE or EPUB Check or customize from the context menu does nothing. I thought the plugin wasn't working but it runs from the menu bar.

However, running ACE Check produces "Invalid EPUB or DRMed" for every book if I run Calibre from Terminal and "ERROR: No report found: Something went wrong. ACE did not produce a report. NoneType: None," if I run do not run Calibre from Terminal. I'm not sure why running Calibre from Terminal or not would produce different results and why neither would work. Terminal shows ACE is installed. Testing with standard EPUB files that I've converted in Calibre (definitely not DRM-protected). Running macOS 15.7, Calibre 8.9, Ace 1.3.7. Usually launch Calibre via Applications folder/Dock.

Thanks!

[thiago.eec]

Originally Posted by mallomar

Thiago meu –

I'm having a couple issues. for some reason clicking on ACE or EPUB Check or customize from the context menu does nothing. I thought the plugin wasn't working but it runs from the menu bar.

I don't have access to MacOS, but it it works just fine on Windows / Linux via context menu.

Originally Posted by mallomar

However, running ACE Check produces "Invalid EPUB or DRMed" for every book if I run Calibre from Terminal and "ERROR: No report found: Something went wrong. ACE did not produce a report. NoneType: None," if I run do not run Calibre from Terminal. I'm not sure why running Calibre from Terminal or not would produce different results and why neither would work. Terminal shows ACE is installed. Testing with standard EPUB files that I've converted in Calibre (definitely not DRM-protected). Running macOS 15.7, Calibre 8.9, Ace 1.3.7. Usually launch Calibre via Applications folder/Dock.

Thanks!

When you say run from terminal, do you mean using 'calibre-debug -g'?
It works fine here using calibre-debug.

P.S.: I just noticed that, for some reason, I forgot to publish the last release (version 0.2.0). Please remove Check Books complely and install the new version from the first post (or via calibre, in an hour or so).

[thiago.eec]

Version 0.2.0 - 22 Aug 2025

- Bug fixes
- Improvements for saving the reports to calibre data folders

[mallomar]

Originally Posted by thiago.eec

I don't have access to MacOS, but it it works just fine on Windows / Linux via context menu.

Yeah, it's bizarre. Nothing happens when I click via the context menu.

Originally Posted by thiago.eec

When you say run from terminal, do you mean using 'calibre-debug -g'?
It works fine here using calibre-debug.

I mean running it like in the first attached image.

Originally Posted by thiago.eec

P.S.: I just noticed that, for some reason, I forgot to publish the last release (version 0.2.0). Please remove Check Books complely and install the new version from the first post (or via calibre, in an hour or so).

Thanks, but I'm still having the same issues. See attached images, one from running from Terminal, one without. Note that the issues are the same for all EPUBs.

[thiago.eec]

I remembered another Mac user having a similar problem. Maybe his solution works for you: https://www.mobileread.com/forums/sh...9&postcount=31

Originally Posted by uhh.andy

I figured out what the problem was.
I had installed node with homebrew, and for apple silicon Macs the executables are put in '/opt/homebrew/bin' which was not in the PATH when subprocess.Popen ran ace.
Adding it to the path fixed the issue.