I installed avast in a new mac book air and everything seemed fine. It was working without any issue,
but I have noticed when Start the computer without internet conection, I got a warning msg saying - internal error, please open avast or check system logs.
I could not check any logs or i did not get any notification ??? and avast icon appears gray and the application offers repair the installation (but I did).
If I turn wifi connection again magically disappears alert and application work again like nothing. :o