After no success with the Cleanup and Build process I uninstalled Laz. When I reinstalled it I also
cleaned up 'stuff' from prior installations. Thus I was required to reinstall all the desired packages that I use that don't come with Laz.
Whatever happened in that process seemed to work because my error messages have vanished and I can see the dialog after Tools->Options.
Getting Lazarus working perfectly again was an excellent Christmas present.

Thank you jamie and everyone else who provides so much help on this wonderful forum.