Comment # 2 on bug 1191189 from Ancor Gonzalez Sosa

The file /etc/default/useradd was recently dropped from the shadow package and
YaST was not prepared for that. See bug#1190864 for some details.

The bright side is that we are just right now working to improve yast2-users to
handle that situation better (by fully relying on "useradd" and whatever
mechanisms it implements now or in the future).

As a temporary workaround, you can run this once and I think it will generate
the file yast2-users expects:

> useradd -D -b /home