Title: [Plugin: elFinder] Won't activate
Last modified: August 19, 2016

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# [Plugin: elFinder] Won't activate

 *  Resolved [summerchilde](https://wordpress.org/support/users/summerchilde/)
 * (@summerchilde)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/plugin-elfinder-wont-activate/)
 * When I try to activate the plugin it says “Plugin doesn’t have a valid header.”

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

 *  Plugin Author [jibiel](https://wordpress.org/support/users/jibiel/)
 * (@jibiel)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/plugin-elfinder-wont-activate/#post-1703491)
 * Please use this actual link to get the plugin [http://wordpress.org/extend/plugins/wp-elfinder/](http://wordpress.org/extend/plugins/wp-elfinder/)
   
   or check wp-elfinder.php — the header must be as follows
 *     ```
       /*
       Plugin Name: elfinder
       Plugin URI: http://www.elrte.ru/elfinder
       Description: Operate your files right from WordPress admin panel using gorgeous elFinder.
       Version: 0.1
       Author: studio 42 + jibiel
       Author URI: http://www.elrte.ru/elfinder
       */
       ```
   
 * You have WP 3.0.1, right?
 *  Thread Starter [summerchilde](https://wordpress.org/support/users/summerchilde/)
 * (@summerchilde)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/plugin-elfinder-wont-activate/#post-1703493)
 * Yes, I have 3.0.1
 * I’ll try manual upload of the plugin and report back.
 *  Thread Starter [summerchilde](https://wordpress.org/support/users/summerchilde/)
 * (@summerchilde)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/plugin-elfinder-wont-activate/#post-1703499)
 * It activated this time but I get the following errors when going to the backend
   menu for it. I should mention I am using WordPress multisite.
 * Warning: unserialize() expects parameter 1 to be string, array given in /home/
   mysite/www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 150
 * Warning: implode() [function.implode]: Invalid arguments passed in /home/mysite/
   www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 150
 * Warning: unserialize() expects parameter 1 to be string, array given in /home/
   mysite/www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 156
 * Warning: implode() [function.implode]: Invalid arguments passed in /home/mysite/
   www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 156
 * Warning: unserialize() expects parameter 1 to be string, array given in /home/
   mysite/www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 157
 * Warning: implode() [function.implode]: Invalid arguments passed in /home/mysite/
   www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 157
 * Warning: unserialize() expects parameter 1 to be string, array given in /home/
   mysite/www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 168
 * Warning: unserialize() expects parameter 1 to be string, array given in /home/
   mysite/www/www/wp-content/plugins/wp-elfinder/mediator/includes/auxiliary-functions.
   php on line 6
 * Warning: array_keys() [function.array-keys]: The first argument should be an 
   array in /home/mysite/www/www/wp-content/plugins/wp-elfinder/mediator/includes/
   auxiliary-functions.php on line 7
 * Warning: array_values() [function.array-values]: The argument should be an array
   in /home/mysite/www/www/wp-content/plugins/wp-elfinder/mediator/includes/auxiliary-
   functions.php on line 8
 * Warning: Invalid argument supplied for foreach() in /home/mysite/www/www/wp-content/
   plugins/wp-elfinder/mediator/includes/auxiliary-functions.php on line 10
 * Warning: unserialize() expects parameter 1 to be string, array given in /home/
   mysite/www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 171
 * Warning: implode() [function.implode]: Invalid arguments passed in /home/mysite/
   www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 171
 * Warning: unserialize() expects parameter 1 to be string, array given in /home/
   mysite/www/www/wp-content/plugins/wp-elfinder/mediator/mediator.php on line 172
 *  Plugin Author [jibiel](https://wordpress.org/support/users/jibiel/)
 * (@jibiel)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/plugin-elfinder-wont-activate/#post-1703501)
 * no, friend, it’s my fault. I’ll fix it in an hour.
    thank you for request.
 *  Plugin Author [jibiel](https://wordpress.org/support/users/jibiel/)
 * (@jibiel)
 * [15 years, 7 months ago](https://wordpress.org/support/topic/plugin-elfinder-wont-activate/#post-1703509)
 * **summerchilde**
    K, it seems I solved post-activation problem. Activation must
   be really smooth now. Thank You.
 * Since You’ve installed plugin before fix was did, You need to change some of 
   the elfinder settings and save it. This must help with variable types problem.

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

The topic ‘[Plugin: elFinder] Won't activate’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/elfinder.svg)
 * [elFinder](https://wordpress.org/plugins/elfinder/)
 * [Support Threads](https://wordpress.org/support/plugin/elfinder/)
 * [Active Topics](https://wordpress.org/support/plugin/elfinder/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/elfinder/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/elfinder/reviews/)

 * 5 replies
 * 2 participants
 * Last reply from: [jibiel](https://wordpress.org/support/users/jibiel/)
 * Last activity: [15 years, 7 months ago](https://wordpress.org/support/topic/plugin-elfinder-wont-activate/#post-1703509)
 * Status: resolved