I create my Mac OS X loadset normally under the root account, before
cloning that image.
From there I install all my applications, except for Google SketchUp
which requires me to log out and log back in as one of the admin users
that was created when I first installed Mac OS X. Then the Google
SketchUp package installer will allow me to install under that system
in Mac OS X. SketchUp should allow root account user to install the
SketchUp package installer to work. The package installer needs to make
an exception for the root account.