Utilizing WP Management Sites and Upgrade Failure 3.7.1
[Tue Oct 29 22:11:46 2013] [error] [client xxx.xxx.xxx.xxx] PHP Fatal error: Call to undefined function get_core_checksums() in xxx/wp-admin/includes/class-wp-upgrader.php on line 1526, referer: https://xxx.com
Have tried from multiple management sites and still getting same error.
It does not appear to be allowing upgrading of WordPress. Although if you go directly into the backend of a site the update button does work.
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