I’m a new user – my old computer was bogged completely by AVG so when it died its (just as obsolete) replacement got Avast.
I’ve been playing a game called Transport Tycoon Deluxe for a couple of years. I played the original version in the nineties, and rediscovered the crowd-sourced version a couple of years ago. I’ve loaded various releases onto AVG-protected computers a number of times in the past few years. Searching the forums, I find an early problem with an ancestor of the current version at http://forum.avast.com/index.php?topic=13278.msg113200#msg113200 which was quickly fixed.
When I was installing the latest version of OpenTTD yesterday, Avast told me that the program was rare and therefore suspect. It tried to lock the installer into a sandbox, where the installer crashed. Running the program in the open gave me a good installation.
The installer is called openttd-1.2.0-windows-win32.exe . Chrome says I got it from http://us.binaries.openttd.org/binaries/releases/1.2.0/openttd-1.2.0-windows-win32.exe
The OpenTTD community is, like most crowd-sourced software, extremely responsive to user needs. Is there some procedure whereby they could submit their installer for inspection so it wouldn’t trigger panic attacks in prospective users?