|  08-03-2020, 04:25 AM | #1 | 
| Junior Member  Posts: 1 Karma: 10 Join Date: Aug 2020 Device: kindle voyager | 
				
				Posting error from p[lugin update
			 
			
			calibre, version 4.21.0 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. Traceback (most recent call last): File "site-packages\calibre\gui2\dialogs\plugin_updater.py", line 732, in _install_clicked File "site-packages\calibre\gui2\preferences\plugins.py", line 416, in check_for_add_to_toolbars ZipImportError: bad local file header: C:\Program Files (x86)\Calibre2\\app\pylib.zip | 
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|  08-03-2020, 05:24 AM | #2 | 
| creator of calibre            Posts: 45,604 Karma: 28548974 Join Date: Oct 2006 Location: Mumbai, India Device: Various | 
			
			Uninstall, delete C:\Program Files\Calibre2 (or wherever you chose to install calibre). Then re-install. And dont worry, uninstalling will not affect your books/settings. | 
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