Thats correct AntiVir does use heurestics and it could possibly be a false positive. I’m checking on that. First question Was avast uninstalled before installing AntiVir? Second what were your settings on Antivir for the guard as well as the main program? Did you have heurestics enabled in either one or both or just one of them? What was the exact file path where the file was located? Was it the guard part of the program that alerted you or was it during a regular scan of your system? I’ll try and help you if I can can.