Another activation problem
I'm running a dedicated Centos 6.7 server with PHP 5.3.3 and MySQL 5.1.73. On top of that I did a fresh Wordpress (version 4.4.1) installation with no plugins and Twenty Fifteen theme. I managed to install H5P-plugin without problems, but when I try to activate it the screen goes blank (white) and nothing happens. The H5P menu item and Settings/H5P do appear, the admin menu and the sidebar menu are visible, but not working. Only recovery is to delete plugin folder on server.
I wonder if the problem is server related. Are there any specific requirements for the server environment?