Well, it seems this problem with the non-display of the associated icon for lower-case extensions is unique to my laptop on which I do the development.Other computers I tried do not suffer from it, and other testers had no problems
either. So it is not an installer problem, and we can forget about it.
I managed to make the uninstall work without any prompting for forceful removalof non-empty folders, by including an explicit Delete command for the installer.exe.
