I noticed this with Avast also. I'm glad it's not doing this for you anymore colej. I released a game in MMF2 a couple of years ago, and that never had any problems with being detected as a virus. Fusion 2.5 files seem to be picked up as viruses though. Hopefully the codesigning thing is the answer. I shall be keeping tabs on this thread, for when I'm ready to export an .exe of my current game!