Installed Virus Barrier X6 now can not access my gmail account

I have just installed Virus Barrier X6 on my Mac and after a scan for malware I can not access my gmail i.e Safari can not open this page, see attachment for error message.

I have checked my preferences of the anti viral software however I can not see any filters that would prevent me from accessing.

Can you help?

Disable this anti-virus software and see if you can access GMail again, if you can, then you need to explore the issue with this anti-virus software, if not, then that's a red herring and you have some other issue..