Fatal error: Call to undefined function stats_get_option() in /[full path deleted for privacy]/wp-content/plugins/official-statcounter-plugin-for-wordpress/StatCounter-Wordpress-Plugin.php on line 37
This plugin needed to bake at 350 for a few minutes longer.
Fortunately, I had a backup of the old plugin and I used FTP to overwrite the "upgrade" version. This set things back right. But -- wowsers -- that thing crashed the admin backend hard.