Hi Glenn, thanks for your reply, and apprecaite the effort you went to to explain to me.
It is a newly purchased licence and downloaded directly using the app in the link I got with the purchase confirmation.
As fas as Im aware there is no AV software running, but good point I will check that. I do know the first time I tired to download Xplane, my PC kept going to sleep, and when I went to runn the app it was complaining that I wasnt running xplane from the dl directory on my desktop, so in the end I deleted the xplane folder on my desktop and downloaded again, with my PC power settings disabling any sleep mode. I will dl the log.txt file later and attach it here.