There seems to be a lot of chatter on the web about Avast reporting false positives on installers built with InnoSetup. I haven't found a lot of information on how to resolve it.

Also, DDSPF20 and DDSPF21 requires .net 4.8, so if the installer is having issues downloading that file you may want to do it manually by going to the download site: or direct to the web installer at