The program Instant Storm is fine, but every screensaver I create using that program is blocked by Avast—even ones created with SWF files that I MADE!! I am constantly having to add to exceptions every time I create a screensaver. It runs like six different 15 second scans. Sometimes finding nothing and allowing it to continue. However, there has been a number of times where despite the fact it found nothing, access to the screensaver is still blocked by Avast. Once in a blue moon it will say it is a virus and remove it but where it says what threat it is is completely blank.
Report a false positive by going to this site: https://www.avast.com/false-positive-file-form.php
You can also report a false positive directly from the quarantine.
But reporting it does not make Avast unblock it. My computer still cannot access despite reporting it as a false positive a number of times