Thanks for the log. A couple questions�?�
1) In the setup, do you get to the panel that shows the license agreement?
2) Have you tried unblocking the exe? (right click, go to properties > General tab, click Unblock) If not, try it and see if you�??re able to run through the setup.
3) Have you tried explicitly running the exe as an administrator? (right click, select �??Run as administrator�?�)
4) Did you have ArcGIS Silverlight/WPF 1.x installed on this machine in the past?
5) What ESRI products do you have installed currently?
Thanks