I did one last uninstall and install of extensions. Used DM to find/replace/fix incorrect file names guided by various error messages (EG WA_Install2.htm to WA_Install.htm etc) and folders (eg Library2 to Library etc) in various configuration folders. Closed and opened DM ignoring error messages and it worked. Now everything works just fine.
My guess is I didn't do as you originally instructed, that is:
"After the install downloads all the files, restart DW":