I have no idea how to submit a False Positive but Avast 2014 9.0.2008 is unhappy (downloading or executing) with the brand new FastStone Image Viewer 4.9.
Funny thing is when the file is just scanned (NOT downloaded or executed), Avast is happy with it. So is Avast on VirusTotal.
Maybe a new/unknown bug with Avast 9.0.2008??