Title: Error after activating the plugin
Last modified: August 22, 2016

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# Error after activating the plugin

 *  Resolved [flohaase](https://wordpress.org/support/users/flohaase/)
 * (@flohaase)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/error-after-activating-the-plugin-1/)
 * Hello,
 * after activating the plugin, I see this error:
 *     ```
       The specified file "agenda-widget.twig" doesn't exist.
   
       exception 'Ai1ec_Exception' with message 'The specified file "agenda-widget.twig" doesn't exist.' in /opt/users/www/nzober17web19/html/wp-content/plugins/all-in-one-event-calendar/lib/theme/loader.php:314
       Stack trace:
       #0 /opt/users/www/nzober17web19/html/wp-content/plugins/all-in-one-event-calendar/app/view/calendar/widget.php(284): Ai1ec_Theme_Loader->get_file('agenda-widget.t...', Array)
       #1 /opt/users/www/nzober17web19/html/wp-includes/widgets.php(217): Ai1ec_View_Admin_Widget->widget(Array, Array)
       #2 [internal function]: WP_Widget->display_callback(Array, Array)
       #3 /opt/users/www/nzober17web19/html/wp-includes/widgets.php(1082): call_user_func_array(Array, Array)
       #4 /opt/users/www/nzober17web19/html/wp-content/themes/nzo/sidebar.php(52): dynamic_sidebar('secondary-widge...')
       #5 /opt/users/www/nzober17web19/html/wp-includes/template.php(501): require_once('/opt/users/www/...')
       #6 /opt/users/www/nzober17web19/html/wp-includes/template.php(477): load_template('/opt/users/www/...', true)
       #7 /opt/users/www/nzober17web19/html/wp-includes/general-template.php(131): locate_template(Array, true)
       #8 /opt/users/www/nzober17web19/html/wp-content/themes/nzo/page.php(31): get_sidebar()
       #9 /opt/users/www/nzober17web19/html/wp-includes/template-loader.php(74): include('/opt/users/www/...')
       #10 /opt/users/www/nzober17web19/html/wp-blog-header.php(16): require_once('/opt/users/www/...')
       #11 /opt/users/www/nzober17web19/html/index.php(17): require('/opt/users/www/...')
       #12 {main}
   
       Request Uri: /nzo/downloads
       ```
   
 * I have to say, that I have moved my WordPress installation from [http://www.example.com/subfolder](http://www.example.com/subfolder)
   to wwww.other-example.com. Maybe is the mistake there.
 * Thanks and best regards,
    Flo
 * [https://wordpress.org/plugins/all-in-one-event-calendar/](https://wordpress.org/plugins/all-in-one-event-calendar/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  [Benjamin](https://wordpress.org/support/users/bsokic/)
 * (@bsokic)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/error-after-activating-the-plugin-1/#post-5277219)
 * Hello,
 * Please try reinstalling the plugin, follow these steps: [http://time.ly/document/troubleshooting/perform-manual-upgrade/](http://time.ly/document/troubleshooting/perform-manual-upgrade/)
 *  Thread Starter [flohaase](https://wordpress.org/support/users/flohaase/)
 * (@flohaase)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/error-after-activating-the-plugin-1/#post-5277222)
 * Ok, I did:
 * – delete the uninstall.php via FTP
    – plugin was already deactivated in the WordPress
   Dashboard – deleted the plugin via WordPress Dashboard – downloaded zip-file 
   from your site – used the WordPress upload form -> error: folder exists already–
   deleted the folder via FTP – used the WordPress upload form -> same error as 
   I have posted above – did a update from version 2.1.4 to 2.1.5 (your version 
   is older than the version available via WordPress)
 * 🙁
 *  Thread Starter [flohaase](https://wordpress.org/support/users/flohaase/)
 * (@flohaase)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/error-after-activating-the-plugin-1/#post-5277229)
 * After uninstalling, de- and activating it works now, but I have a new problem
   with the iCal feed.
 *  [Jashan](https://wordpress.org/support/users/jashan/)
 * (@jashan)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/error-after-activating-the-plugin-1/#post-5277390)
 * Hello,
 * What’s the issue with ICAL feed? Please elaborate.
 * Thanks
 *  Thread Starter [flohaase](https://wordpress.org/support/users/flohaase/)
 * (@flohaase)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/error-after-activating-the-plugin-1/#post-5277393)
 * I have solved the problem. The was that I have used a htaccess file and the login
   data was saved in my browser but not in my calendar client.
 * Thanks a lot 🙂

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Error after activating the plugin’ is closed to new replies.

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 * 5 replies
 * 3 participants
 * Last reply from: [flohaase](https://wordpress.org/support/users/flohaase/)
 * Last activity: [11 years, 9 months ago](https://wordpress.org/support/topic/error-after-activating-the-plugin-1/#post-5277393)
 * Status: resolved