Sorry it took me so long to get back, very busy
I re installed PlusSpec as you said and in the link you said to follow I never saw anything about the ruby console come up, it just installed and I clicked next, agree and then finish.
Anyway, I went back in, inserted components on external wall and internal wall and the same thing happens, I get 2. If I try and move the component it moves one and leaves one there.
I then saved and closed and got a bugsplat and then when reopen file I get invalid message and then comes up with the moved components only.
Please see pictures below