Manual Installed Autoresponder and common plugin on PHP list 3.3.1.
Obtained the plugins from this page:
everything was working up until this install. Now I only get a blank page.
Oh, during manual install I was asked if I wanted to overwrite files for the common plugin and I said yes.
Centos 6.9 with another same version of phplist running on another domain on the same server without these installs runs fine.