I know this is not what you want to hear, but I was having some install problems also with DCS on "G" drive. I un-installed DCS and reinstalled it back on "G" drive and checked my register which indicated a good install. I also reset Voice Attack which removed the license and then unstalled it and deleted the folder from the Program Files (x86). After I reinstalled Voice Attack it found DCS on "G" drive and Viacom install was a breeze following the instructions, and it works great.