SOLVED !!! Problem with JtableUser

Hi,
I'm buy and download the 1.7.2 version of EDocman, now installed in Joomla 2.5. When i was to create a new category i see the following error message "Clase de la tabla JTableUser no encontrada en el archivo" or "JtableUser table class not found in file". Im searching some support to resolve this issue, and the only Topic Available on nulled-mirror talk about a PHP file called user.php on line 884, that needs support and upgrade.
Otherwise, if i save the category, document or any change, all the pages of the administrator interface turns to white only text html, and the only solution is call the mysql tables from edoc and delete it all.

Do you know how to solve this?

Hi Nicolas,
Please submit ticket and send your site information with super admin account. I will check the issue for you
Thanks
Dam

Hi,
You are also upgrade your Joomla CMS to 2.5.28 to solve the issue. In additional, Joomla 2.5 has a critical security issue. So after upgrading to Joomla 2.5.28, you will need to do one extra step to make your site secure. Please replace the file libraries/joomla/session/session.php on your site with this file raw.githubusercontent.com/PhilETaylor/Jo.../session/session.php to have your site secure
Thanks
Dam

Thanks Dang, the problem was solved with your instructions.