Fatal error: Call to undefined function is_blog_installed() in C:\AppServ\www\ICARE_site\site\wp-includes\load.php on line 538

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'wp_ob_end_flush_all' was given in C:\AppServ\www\ICARE_site\site\wp-includes\class-wp-hook.php on line 298