That (uncheck the script map restriction option) was the only step I missed (as I went back and check, it was there in plain sight on the configuration instruction Rick sent me earlier).
All my problems started when I did not run the console/setup routine as admin and the configuration was done half way. My effort to finish the rest with manual procedures only made matter worse.
Actually the console/setup from version 5.20 did work with IIS 8 under Windows 2012 (run as admin) after I cleared/deleted/removed/reset all previously installed web connection files/settings, etc. I would have uninstalled/reinstalled the IIS 8 if it were possible.
Anyway, thanks a million and you and Rick really saved my day.
Steve Yu in Houston