Very strange, it have been ok last 4,5 years, and then suddenly "Virus detected" happened.
I made an experiment: just rebuilt the same setup file from the same files (just changed source drive for distrubution from H: to E: or w/e and used new version of installer) and no "Virus detected" message anymore.
I didn't update combat 4.01 in downloads section as i just became ready to release the new version: 4.2.
So, use it and enjoy.
False-positive virus detection fixed there also.