Fatal error: function call undefined is_multisite ()?

Question

I recently updated wordpress 3.0 automatically. Before the upgrade, everything works fine. After updating, the page displays with an error message

Fatal error: function call undefined is_multisite () in / home 1 / servername / public_html / myfolder / mysite / wp-includes / wp-db.php on line 505

Then I overwritten all the files with the new version files from FTP. But still I have the same problem. Can anyone help me solve this problem. Thanks in advance.

Answer 1

FTP file wp-includes/load.phpand wp-settings.phpand make sure that:

• wp-includes / load.php line 578 -function is_multisite()
• wp-settings.php line 19 - require( ABSPATH . WPINC . '/load.php' );

, , .

Answer 2

, SVN, wp-includes wp-settings.php "svn up"