I also got this error
Fatal error: Call to undefined function get_user_count() in G:\websites\server4.localhost\wordpress3_beta1\wp-admin\ms-admin.php on line 21
on SuperAdmin > admin
Almost every page of Superadmin area is showing some error.
Fatal error: Call to undefined function is_subdomain_install() in G:\websites\server4.localhost\wordpress3_beta1\wp-admin\ms-sites.php on line 461
Fatal error: Call to undefined function get_blogs_of_user() in G:\websites\server4.localhost\wordpress3_beta1\wp-admin\ms-users.php on line 261
Fatal error: Call to undefined function is_subdomain_install() in G:\websites\server4.localhost\wordpress3_beta1\wp-admin\ms-options.php on line 107
Fatal error: Call to undefined function get_blogs_of_user() in G:\websites\server4.localhost\wordpress3_beta1\wp-admin\my-sites.php on line 12
