I've rolled out version 6.0.20 of the virtualmin-config package. This package provides the
virtualmin config-system command for systems installed with 6.0.x of the install script (and is not currently provided for systems installed with the old 1.0.x version of the install script).
Changes since 6.0.19:
The yum groups (for RHEL/CentOS) and metapackages (for Debian/Ubuntu) have also been updated to reflect the new dependencies for minimal mode.
As always, let me know if you run into any problems.