We have eliminated user rights or file permission as a cause.
We have also verified customer was using the correct version of New Atlanta Servlet Exec AS installer.
Verified IIS 7 has the "ISAPI Extensions" and "ISAPI Filters" Features installed already.
The true cause of the problem is with Servlet Exec 6 installer requirement for 64 bits "1.5” or “1.6” sun JDK only while installing on 64 bits windows operating system.
While Oracle has stop supporting either version JDK, a lot of customers do not have those version JDK installed out of box.
If you installed JDK 1.7 above, Servlet Exec 6 installer will not find what it is looking for and will behave abnormally.