Support » Installing WordPress » call to undefined function is_multisite after wordpress 3.0 upgrade

  • Resolved serialboxhpc

    (@serialboxhpc)


    Whats up with that?

    I upgraded from 2.9.2 to 3.0 using the automated option from inside my WordPress admin section.

    As soon as it finished unpacking files, I got a blank screen.

    When I review my log files, all I see is:

    [Thu Jun 17 15:35:11 2010] [error] [client zz] PHP Fatal error:  Call to undefined function is_multisite() in /var/www/vhosts/mydomain/httpdocs/wp-includes/wp-db.php on line 505

    wtf?? It did not even prompt me for a database upgrade or anything.

    I then went and manually downloaded the wordpress 3.0 files and uploaded them myself overwriting the old files.. I still get blank pages everywhere.

    Cannot get to wp-admin.. cannot run wp-admin/upgrade.php or anything.

    What am I supposed to do now?

Viewing 15 replies - 16 through 30 (of 30 total)
  • ok .. I'm back up and running. I simply downloaded 3.0, unzipped and uploaded/overwrote JUST the files in the root dir, nothing else. Phew!

    Thank you. I fixed it already.

    all you really need to overwrite is wp-settings.php

    all you really need to overwrite is wp-settings.php

    Thank you, after reading everything from above this was the only solution I needed.

    I am experiencing the same thing, after I automatically upgraded to wp 3.0 version, I tried to refresh the page to see how it will be but what came up was Fatal error: Call to a member function add_rewrite_tag() on a non-object in /home/fadvee/public_html/wp-includes/taxonomy.php on line 289.

    I have no knowledge of PHP I am a newbie to all this programing of a thing, moreover ‘am unable to sign in into my FILEZILLA Ftp. Everything is not working for me please help.

    Every advices is welcome.

    I received the same error on my automatic upgrade. I am presently working through everyone’s solutions to see what will correct the issue

    (Simply replacing settings.php prompted an additional error.)

    I will post again if I am able to fix, or to let you know if my problem remains unresolved.

    I got the same error as the thread starter. Exactly the same situation.

    “all you really need to overwrite is wp-settings.php”

    I will try this.

    hey guys,
    same problem i tried to open my dashboard and got Fatal error: Call to undefined function is_multisite() in /home/xxxxxx/public_html/xxxxx.com/wp-includes/wp-db.php on line 505
    but how can i download the files then manually and upload it to the root directory? ftp??
    because i can’t get to anywhere on my dashboard just a blank screen with the error

    Don Vitori….

    I have the same problem as you….. after upgrading to 3.0 YIKES
    Did you find a solution….

    wp-includes/wp-db.php on line 505 error

    I also got the same problem. I overwrite all the files still i have a same problem. In my case there is no problem for admin. Hope to get a solution. Thanks

    Same error Call to undefined function is_multisite() when doing a manual install of 3.0. Uploaded wp-settings as suggested above and fixed it! Thanks!

    thanks for your advices guys!1. I just overwrited wp-settings.php in everthing going well!!

    yes, overwriting wp-settings.php also worked for me, way easier than a full backup and restore.

    I already had this problem and now it is fixed on my blog

    After having the same error, I just update the wp-settings.php file and the site is now up. Thanks spencerjw!!

Viewing 15 replies - 16 through 30 (of 30 total)
  • The topic ‘call to undefined function is_multisite after wordpress 3.0 upgrade’ is closed to new replies.