Recently i updated wordpress 3.0 automatically. Before update, everything working fine. After the update, page is displayed with error message
Fatal error: Call to undefined function is_multisite() in /home1/servername/public_html/myfolder/mysite/wp-includes/wp-db.php on line 505
I then overwritten all the files with new version files from FTP. But still I am having the same problem. Can anyone help me to solve this problem. Thanks in advance.
FTP the file
wp-includes/load.php
andwp-settings.php
and check that;function is_multisite()
require( ABSPATH . WPINC . '/load.php' );
If that’s all ok, disable any troublemaking plugins by deleting them or temporarily renaming them in your plugins folder.
Or if you are using SVN, delete the wp-includes folder and the wp-settings.php file and do and ‘svn up’