Two things have been pointed out:
1. RIGHT-clicking applies to those who are normally right-handed.
Obviously it's all reversed if you're left-handed. (If you're cack-handed,
then there's really nothing that can help you!)
2. Using that method of returning to an older version of Skype only
works if you had an older version previously installed (sorry ...
that tends to go without saying ... but it's been pointed out ...
and is ... of course ... true).
PS This does show that people read my e-mails.