Any antivirus program might consider an executable that opens and creates files “suspicious” but shouldn’t detect an actual virus. I just uploaded the executable to virustotal.com which is a free site thst will scan an uploaded file with 55 different AV packages(including Avast) and provide results. The image2gcode executable was only flagged by one obscure AV package called Qihoo 360 but passed on the rest, including Avast. Try it yourself if you’d like. I do plan to zip the source code today an upload it to the site but you’ll need Visual Studio to compile it.