Support » Fixing WordPress » Not able to install any plugins.

  • Hi,

    Recently i have updated my site with WP3.6

    but after updating i am not able to install any plugins.

    its shows error like.

    Fatal error: Call to undefined method Plugin_Upgrader::init() in /home/XXXXXX/public_html/wp-admin/includes/class-wp-upgrader.php on line 399

    any suggestion ?

Viewing 8 replies - 1 through 8 (of 8 total)
  • esmi


    Forum Moderator

    Try re-uploading all files & folders – except the wp-content folder – from a fresh download of WordPress. Make sure that you delete the old copies of files & folder before uploading the new ones.

    Hi ,

    Thanks for prompt response.

    i one thing i forget to mention.

    i have installed better WP security and, renamed WP-CONTENT to another name.

    is it work?



    Forum Moderator


    But before updating WP3.6 it was working perfectly.

    eAccelerator and suPHP don’t play nice together because of file permissions

    Disable eAccelerator …rebuild Apache

    or try

    Adding this to .htaccess

    php_flag eaccelerator.enable 0
    php_flag eaccelerator.optimizer 0

    Boo! Just upgraded one of my sites to 3.6 (and i’m a ROOOOKIE when it comes to hosting)then tried to load Ultimate Construction Page plugin and got the fatal error.

    What the heck is eAccelerator and suPHP? Where do I find them in cPanel?

    Sorry to be such a noob, but, you know how it goes!


    Same here,

    ranchop, Can you guide from where we can find eAccelerator and suPHP?

    Even uninstalling complete WP from cPanel for the affected site and reinstalling 3.5 didn’t work. Hm.

Viewing 8 replies - 1 through 8 (of 8 total)
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