About the eye posing problem.
In my case, I import v4.1 directly from the browser tray, and when I turn facial morph, say "eye width" morph for example, eye sockets would move but eyeballs won't follow the movement. They stay at the default position. Very sick looking.
Of course, there's workaround, but it should be fixed.
After all, v4.1 is DAZ's flagship model and the C6pro their flagship app.
There are many small problems like that in c6pro, but I like this app in general.