Yes, it's not working on my windows and my hardware doesn't support an upgrade sadly. So, untill I get money to upgrade my pc I can't do anything.
I have also searched through their forums and it seems there are many others who are using the same version I was using till now or even newer or older versions which are no longer working.
They've announced this: http://blogs.skype.com/2014/06/20/making...n-desktop/
""As we look ahead to the future, we‘re focusing our efforts on bringing the latest and greatest to the most recent versions of Skype. As a result, we are going to retire older versions of Skype for Windows desktop (6.13 and below) as well as Skype for Mac (6.14 and below) over the next few months.""