Oh! Right. Why I didn't notice this is beyond me. I assumed because there was two folders that the Popup from the firewall made the new one but no it's just the version numbers as you say.
Now I have no idea why opera (it was already allowed full access) would pop up and make itself a new exception. When I went to look at my exceptions there were two of them for Opera and before there was only one.
Is it possible the people at unity game engine could have done something that to me seems like an exploit? I ask because I bought something from them and the "Open in Unity" button wouldn't work to download it. This is the only way to DL it. I posted a question to Tech about it. This was all within 15min of the problem.