PostgreSQL-Modul blank and other issues with it.

Still wondering on that PostgreSQL issue. I wanted to activate Postgree but it still does not work. I only get a blank Screen when clicking on the PostgreeSQL Webmin Module link. And it does not matter if Postgresql server is running or not. Its always just blank white page without any error messages. There are also no hints in the Webmin error log file. Furthermore when PostgreSQL support for Virtualmin is enabled, "Edit Databases" does not work on any domain. When i turn it off "Edit Databases" works again.