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DiapDealer · 10-25-2025, 06:23 AM

Those paths show that you're not actually using the Sigil AppImage, but rather a repo-installed version of Sigil. I thought at first that your "Use Bundled Python" checkbox had come unchecked in Preferences but the paths indicate that you're using a plugin framework from /usr/share/sigil/plugin_launchers. That's not the path the AppImage would display on an error in it's plugin framework. The paths also show that your system Python (3.12) is being used. That version of Python is not bundled with the Sigil AppImage.

How are you launching Sigil? If you don't have the AppImage properly integrated into your desktop with a .desktop file, using the context menu's "Open With" on an epub file (or simply double-clicking an epub file) isn't going to open the epub with the AppImage.

The first thing you need to do is uninstall the repo version of Sigil so there's no confusion over which version you're using.

To test that the AppImage is working: double-click the Sigil AppImage to launch Sigil; go to your Plugin Preferences and make sure the "Use Bundled Python" box is checked; open an epub using Sigil's File->Open menu; launch the EpubCheck plugin. That should work without error.

10-25-2025, 06:23 AM	#2
DiapDealer Grand Sorcerer Posts: 29,148 Karma: 211348980 Join Date: Jan 2010 Device: Nexus 7, Kindle Fire HD	Those paths show that you're not actually using the Sigil AppImage, but rather a repo-installed version of Sigil. I thought at first that your "Use Bundled Python" checkbox had come unchecked in Preferences but the paths indicate that you're using a plugin framework from /usr/share/sigil/plugin_launchers. That's not the path the AppImage would display on an error in it's plugin framework. The paths also show that your system Python (3.12) is being used. That version of Python is not bundled with the Sigil AppImage. How are you launching Sigil? If you don't have the AppImage properly integrated into your desktop with a .desktop file, using the context menu's "Open With" on an epub file (or simply double-clicking an epub file) isn't going to open the epub with the AppImage. The first thing you need to do is uninstall the repo version of Sigil so there's no confusion over which version you're using. To test that the AppImage is working: double-click the Sigil AppImage to launch Sigil; go to your Plugin Preferences and make sure the "Use Bundled Python" box is checked; open an epub using Sigil's File->Open menu; launch the EpubCheck plugin. That should work without error. Last edited by DiapDealer; 10-25-2025 at 06:41 AM.