Failed to install script : Could not find any values in section PHP

What is this?

And, when I click Back, what does

“Failed to install script : Scripts can only be installed into virtual servers with a home directory and website” mean?

The domain/VS clearly has a home directory, and a web site, as Joomla is installed.

The installer, SugarCRM6 at least partially runs on another VS on my server.

Thanks!