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Support Forums Forums General Support Fatal error when activating plugin

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This topic contains 4 replies, has 2 voices, and was last updated by  sanneij 6 months, 1 week ago.

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  • sanneij

    Hi there,

    Because of problems on the website I deactivated all the plugins to see what plugins is causing the issue. Now I can’t seem to reactivate Search & filter. I get these messages:

    Notice: registration.php is deprecated since version 3.1.0 with no alternative available. This file no longer needs to be included. in D:\www\\www\wp-includes\functions.php on line 4019
    Fatal error: Cannot redeclare get_plugin_data() (previously declared in D:\www\\www\wp-admin\includes\plugin.php:68) in D:\www\\www\wp-admin\includes\plugin.php on line 111

    Any ideas what might causes this?

    Trevor Moderator

    Use ftp and delete the plugins/search-filter-pro folder.

    No data or settings will be lost.

    Now download v2.4.6 from your account, go to Wp Admin -> Plugins -> Add New and upload/install this version.


    Done. But activation still doesn’t work. I get the same messages…

    Trevor Moderator

    Then something is wrong with the actual WordPress setup itself. You may need to re-install WordPress.


    OK, I’m gonna give that a try. Thank you

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