May I suggest that you start from scratch. (That includes removing avast! from your system)
You’ll find instructions at:
https://docs.google.com/document/d/1TCCX0R7AAF2WOxAMQ_kcun2nNnCPFAk2P4RBzFXSgds/edit?usp=sharing
You’ll find a helpful video at:
http://forum.avast.com/index.php?topic=93544.msg906287#msg906287