Interesting ..... about 18 months ago I upgraded from GirlFriend 5.0 to Fianceé 1.0, but for some strange reason it uninstalled itself pretty much straight away. I didn't run any kind of uninstaller either, and I tried to prevent the uninstallation but without any success whatsoever.

So it follows that the version of Fianceé that I'm currently running is 2.0, and I do expect this one to upgrade successfully.