I'm trying to use this program, but Norton Internet Security keeps blocking it on the grounds that it is the "Blade Runner Trojan Horse". Anybody know why?

Nevermind, it's fixed.

I'm sorry to bump this thread up, but I downloaded PD today and I've had this same problem. Norton then went on to block the whole of PD it seems and it doesn't want to open up. Can anyone help?
Thanks,
Andrew