I am having the same problem – cannot log in post 2.8 upgrade-when I try to log in I get this message:
Fatal error: Call to undefined function: is_site_admin() in /home/.mollye/allaboutrace/allaboutrace.com/wp-content/plugins/sem-google-analytics-admin.php on line 20
Any suggestions will be much appreciated. I am panicking. In advance, thank you
