Title: Impossible to activate the plugin ….
Last modified: August 30, 2016

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# Impossible to activate the plugin ….

 *  Resolved [polykrom](https://wordpress.org/support/users/polykrom/)
 * (@polykrom)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/impossible-to-activate-the-plugin/)
 * Hi,
 * I’ve tried to install the free version of the plugin in order to test it before
   get the full version but it give me a weird error when trying to activate it :
 * Catchable fatal error: Object of class stdClass could not be converted to string
   in /var/www/vhosts/vps217372.ovh.net/blaamy.com/wp-content/plugins/wp-meta-data-
   filter-and-taxonomy-filter/core.php on line 202
 * Any update ?
 * thanks
 * François
 * [https://wordpress.org/plugins/wp-meta-data-filter-and-taxonomy-filter/](https://wordpress.org/plugins/wp-meta-data-filter-and-taxonomy-filter/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Thread Starter [polykrom](https://wordpress.org/support/users/polykrom/)
 * (@polykrom)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/impossible-to-activate-the-plugin/#post-6742614)
 * any answer please ?
 * thanks a lot
 * François
 *  Plugin Author [RealMag777](https://wordpress.org/support/users/realmag777/)
 * (@realmag777)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/impossible-to-activate-the-plugin/#post-6742615)
 * Hello François
 * [http://clip2net.com/s/3qnP4Sd](http://clip2net.com/s/3qnP4Sd) -strange issue,
   looks like $key_string is object!! But its not possible!
 * Ok, to activate the plugin in core.php in `public static function get_page_mdf_session(
   $key_string)` write `return ""`,
 *     ```
       public static function get_page_mdf_session($key_string){
          return "";
   
       //code is below
       }
       ```
   
 * Then activate the plugin, then on the plugin settings page -> tab Advanced set‘
   Where to keep search data’ -> session -> save settings and remove that `return""`
   from get_page_mdf_session
 *  Thread Starter [polykrom](https://wordpress.org/support/users/polykrom/)
 * (@polykrom)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/impossible-to-activate-the-plugin/#post-6742618)
 * Hi !
 * Thanks a lot for the answer..
    Will i have to do such manipulation with premium
   plugin ? And what if i update the plugin ?
 * I don’t know why $key_string is object , just the error message.
    I use a woocommerce
   and buddypress integrated theme so it should work :-/
 * thanks again 😉
 * François
 *  Plugin Author [RealMag777](https://wordpress.org/support/users/realmag777/)
 * (@realmag777)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/impossible-to-activate-the-plugin/#post-6742646)
 * Hello François
 * If you have such issue on your server you will get the same with premium version
   because they have equal code …
 * Try disable another plugins and test only MDTF and your theme. In past I not 
   met such errors with the plugin, it is first time …

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Impossible to activate the plugin ….’ is closed to new replies.

 * ![](https://ps.w.org/wp-meta-data-filter-and-taxonomy-filter/assets/icon-256x256.
   png?rev=2852943)
 * [MDTF - Meta Data and Taxonomies Filter](https://wordpress.org/plugins/wp-meta-data-filter-and-taxonomy-filter/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-meta-data-filter-and-taxonomy-filter/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-meta-data-filter-and-taxonomy-filter/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-meta-data-filter-and-taxonomy-filter/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-meta-data-filter-and-taxonomy-filter/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-meta-data-filter-and-taxonomy-filter/reviews/)

 * 4 replies
 * 2 participants
 * Last reply from: [RealMag777](https://wordpress.org/support/users/realmag777/)
 * Last activity: [10 years, 6 months ago](https://wordpress.org/support/topic/impossible-to-activate-the-plugin/#post-6742646)
 * Status: resolved