Problem with Anti-Virus and PE-Protector

Hello,

I have a small PE-Protector.

Bud for 2 weeks F-Rescure, McAffe know then a new variant virus.
I tell this problem F-Resure and tell them that your false error.

They tell back that this problem will be clear.
So my question:

If I make a new version what must I do that no Anti-Virus Problem?

Thank you