Hi.
AVG had a rogue edition some months ago that incorrectly thought Ship Simulator was a virus and helpfully deleted it. AVG fixed the poblem pretty quickly.
It's possible that your system is infected and it's possible that PCTools has a problem. (I didn't know PCTools still existed!).
(1)
Update PCTools and try again.
(2)
Install a free one, such as AVG and see what that says. If both claim "virus", then you are indeed infected. If not, speak to PCTools.
I'm assuming your version of PCTools is up to date, of course.
I'll move this to "General Discussions". That way, you're more likely to get feedback from others. That may be useful.