I use Skype every week to talk to an elderly and technophobic relative, on the far side of the planet.
What version is he using? Heck if I know, and I'm damn sure he wouldn't even understand the question. But if it suddenly stops working, I wouldn't give much for his chances of learning to use anything else. It's taken him several years to learn how to receive calls on Skype, and even now he's far from confident with it.
Dear Microsoft: is it really asking too much for you to just STOP FUCKING AROUND WITH THINGS THAT ALREADY WORK?