Did you add the folder, or the EXE file(s) and the drivers it maintains to run that program? That means all of those files, not 1 or two.
besides, why would you not want Avast! to do it’s job? Obviously it finds it susipicious, it wouldn’t be the first time a major company does something that would include shitware. (Cough Comodo Gag*)
Let Avast! do it’s job, complete the scan, and then use it, if nothing is wrong, it will let it continue.