Fatal error: Call to undefined function is_blog_installed() in D:\Hosting\2985010\html\clients\analogdigital\wp-includes\load.php on line 496

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 D:\Hosting\2985010\html\clients\analogdigital\wp-includes\plugin.php on line 525