First, Falko, thank you for all your help. I really appreciate it.
As I see this I am left with no other alternative than to rebuild the software in this computer. And as it is my first attempt, I see this all as part of learning about Linux.
(I really believe that it is something I may have inadvertently configured incorrectly and my inexperience does not allow me to locate that error.)
So, to conclude, I am actually looking forward to "doing it again." Yes, extra work, but I learn something every time.
Once again, thanks for your help.