Resolution:
As the user "jon", uid 777, primary group xdom on hendrix, I was able to
(mostly) successfully complete a full installation of server and
bpmapps.

The caveat to complete success was the starting of the IcRepDaemon, NOT
the server.

The reason for failure to start the IcRepDaemon is:

IcRepDaemon: Could not set-uid to 765.  Daemon exiting.

Note that 765 is the uid of icadmin on our systems.  Also note that the
protection on IcRepDaemon is:

-r-xr-xr-x  1 jon xdom 530936 Feb 27 17:59 IcRepDaemon

As the user icadmin I can start this just fine.

The problem here was that the parameter in IcRepDaemon.config, USER-ID,
was set to icadmin.  I don't remember missing a panel that would have
let me set this to something else, but in the .tpl file the default is:

<&ltIC_REPOSITORY_LOGIN=icrep>>

So, I believe that there is a bug in the installer.  After I changed the
value of USER-ID to "jon" I was able to start IcRepDaemon.  NOTE: On
Windows, the icrepdaemon.config file does not have this parameter.

HOWEVER, my point was that the server would start and the install would
complete and it did.

IcRepDaemon fails to start after 6.1 install.