After installing 3.9.0 and I try to create a new "Article" Form & Content Type. I get this error
403 Forbidden
Access is forbidden to the requested page:
xxxxx/administrator/index.php?option=com_cck&task=type.add&skeleton_id=10&tpl_a=%3C?php%20echo%20$template_name;%20?%3E&tpl_s=%3C?php%20echo%20$template_name;%20?%3E&tpl_c=%3C?php%20echo%20$template_name;%20?%3E&tpl_i=%3C?php%20echo%20$template_name;%20?%3E (port 80)
Please forward this error screen to xxxxx's WebMaster.
However if I uninstalled this and install the last version 3.8.4 . It works fine and in fact I never had ever experienced this issue before.
I'm using Joomla 3.6.2
PHP Version 5.4.45