Unfortunately, Avast is detecting it as a virus, probably because it is an .exe file. But it is not! You can trust me! ;) You can add the file to the safe list or turn off the AV to play. Just do not forget to turn on again! :) By the way, we'll try to figure out why Avast is detecting it as a virus, it is not just you that are having this problem. Thank you for the report! :)