Thanks for your screenshots.
Blender 2.78 a throws the exact errors here like you can see in the Bforartists part. I am lost 
I have reopened the issue. First thing is that i need to understand how you can get it to work at all. And then let’s have a second look at it. But as told, i am lost here. What you could do is to contact the addon developer. Maybe he has an idea here.