Hi!
Some time ago i tried avast to see how it works. After that i uninstalled it with App Cleaner (haven't seen the "uninstall avast" option in the menu).
Now I've re-installed it.
It starts normal and all, but it says it cant recognize the status of the mail- and webshield.
And when I change something in the system settings (turning shield on/off), i get an error:

I've tried to get support from avast but something didn't work there. So I've tried it here.
I'm using OS X Lion on a 2011 MacBook Pro 15".

It says: Configuration failed. Check system log for details.

It says: Protection status: Cannot recognize.