You can use the instructions here to install v6.39, if you want v7 instead then you can update it or turn on automatic updating and let it update itself:
We now have numerous posts from users dissapointed with the new v7 and asking if/how they can roll back to v6.39.
Whilst normally I would say that you should use the latest version that works on your machine I also believe that you should have the choice to roll back from a major feature update.
Particularly if/when that update is flawed.
So here is how to do it using the official v6.39 installer (so that you don’t have to download a possibly dodgy* v6.## installer from a 3rd party website):
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