обновление c 2.7 на 2.8.2

При обновлении с 2.7. на 2.8, открыв ссылку wp-admin/upgrade.php вижу такое

Warning: include_once(/home/binaries/public_html/wp-includes/pomo/mo.php) [function.include-once]: failed to open stream: No such file or directory in /home/binaries/public_html/wp-settings.php on line 307

Warning: include_once() [function.include]: Failed opening '/home/binaries/public_html/wp-includes/pomo/mo.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/binaries/public_html/wp-settings.php on line 307

Fatal error: Class 'Translations' not found in /home/binaries/public_html/wp-includes/l10n.php on line 407

Посоветуйте в чем может юыть проблема, пожалуйста