Hi there --
A client of mine uses WordPress.org domain mapping for his blog and today we were on a conference call adjusting his settings and were prompted to accept an update to WordPress 3.0. After doing so, the update failed, and when I clicked a prompt to try again, I got a scripting error:
Fatal error: Call to undefined function is_multisite() in /home/content/c/a/r/carrozzaweb/html/blog/wp-includes/wp-db.php on line 505
As a result, the blog is no longer live! Why did this happen after accepting an update? This should not happen.
Can anyone help direct me to where I need to go to remove that error? The Web designer who set up the blog hosting is not reachable today.
Thank you for your help.