Did you ever figure this out? I am having the same problem. Reinstalling WP doesn’t help nor does any of the other things I’ve read here. I need to get back in!
“Call to undefined function” is a sign of an incomplete upgrade, where not all the files got upgraded. Did you do a upgrade beore this happened?
Try:
– switching to the default theme by renaming your current theme’s folder in wp-content/themes using FTP or whatever file management application your host provides.
– resetting the plugins folder by using FTP or whatever file management application your host provides. Sometimes, an apparently inactive plugin can still cause problems.
Delete the old wp-includes and wp-admin directories on your web host.
re-upload the wp-admin and wp-includes folders from a fresh download of WordPress by using FTP or whatever file management application your host provides.
Do a manual upgrade by using FTP or whatever file management application your host provides.
– re-run the upgrade manually using wp-admin/upgrade.php.
Thank you but in my case I had read that repines elsewhere and tried that several times to no avail. It isn’t working in my case even though I’ve downloaded WP 3 times, did a manual install at least 6 times, all plugins are disabled etc. Doesn’t work. any other ideas?
I’ve contacted my host about upgrading my php in case that’s the problem. Not sure what else to do.
