Norton Internet Security 2012 - Stops working when changing firewall settings

Hello everyone! 

A while ago I purchased Norton Internet Security 2012, it has worked very well and I like it very much!

A couple of days ago I upgraded my OS to Windows 8 Pro.

The problem is that when I try to change my firewall settings in Norton IS 12, the program stops working.

Now; I'm not sure if the issue I'm having is because of Windows 8 or something else, because I never before changed any settings in Norton IS 12 before.

 

Any ideas what could cause the problem and/or how to fix it?

Thanks!