If traffic blocked here means net not working then I guess its coz of Avast Webshield as by default it monitors traffic of every processes.
I remember when I was tried Rising FW with Avast 6. I had the prob of net not working. I noticed that either disabled net worked.
I could solve it by
Either excuding Rising processes in Avast
or disabling Avast Webshield or if I remember correctly setting Webshield for browsers only & not all processses.