Firstly, to Enigma. Thanks for your reply to this issue.

I can report that both of the options you provided fixed this issue :)

Secondly in response to TroyDun, FWIW I can describe my experience when I contacted BT about this issue.

At first I had trouble actually raising a ticket with BT but ...

I searched the forum for Bitdefender issues and noticed there have been several earlier reports of issues.

However I'm posting this message because the I think Bitdefender have taken these problems to a new level :(

Just recently I started getting reports of my software crashing on start up and ...