In this case I was trying to install it on my fresh Windows 7 installation, but I forgot the silent /y and /gm2 switches, will it make any difference? If so, can't it be installed on Windows 7 fresh installations? I had other installer which worked fine, but didn't had the 2012 libraries your installer had. Only those 2 failed, the F#, J#, 2010, 2012 & 2013 libraries installed with no problems.