If IGG is "killing" the installer it's because it's a bad installer and probably installing something bad onto your system. I'll trust this site before I will any of the current "scene" groups. They don't have the honor that previous groups have had.
https://www.youtube.com/watch?v=HlzWOl7_qRo
https://www.youtube.com/watch?v=g3KdR8RtJgA
thanks for upload